Colored glass articles having improved mechanical durability

FIELD

The present specification generally relates to glass compositions and glass articles and, in particular, to glass compositions and ion-exchangeable, colored glass articles formed therefrom.

TECHNICAL BACKGROUND

Aluminosilicate glass articles may exhibit superior ion-exchangeability and drop performance. Various industries, including the consumer electronics industry, desire colored materials with the same or similar strength and fracture toughness properties as existing, non-colored, ion-exchange strengthened glasses. However, simply including colorants in conventional aluminosilicate glass compositions may not produce the desired color.

Accordingly, a need exists for an alternative colored glass articles having high strength and fracture toughness.

SUMMARY

Aspect A1 includes a colored glass article comprising: greater than or equal to 50 mol % and less than or equal to 80 mol % SiO₂; greater than or equal to 7 mol % and less than or equal to 20 mol % Al₂O₃; greater than or equal to 1 mol % and less than or equal to 35 mol % R₂O, wherein R₂O comprises at least one of Li₂O, Na₂O, and K₂O; greater than 1×10⁻⁶mol % and less than or equal to 10 mol % of a colorant, wherein the colorant comprises at least one of Cr₂O₃, Au, Ag, CuO, NiO, Co₃O₄, TiO₂, CeO₂; and greater than or equal to 12 mol % and less than or equal to 24 mol % of Al₂O₃+MgO+CaO+ZnO, wherein the colored glass article comprises: a transmittance color coordinate in the CIELAB color space comprising an L* value greater than or equal to 55 and less than or equal to 96.5 as measured under F2 illumination and a 10° standard observer angle; a compressive stress profile with a depth of compression greater than or equal to 0.15t where t is a thickness of the colored glass article, a compressive stress greater than or equal to 200 MPa, and a central tension greater than or equal to 60 MPa; a dielectric constant from 5.6 to 6.4 over a frequency range from 10 GHz to 60 GHz; and the thickness t is greater than or equal to 0.4 mm and less than or equal to 5 mm.

Aspect A2 includes the colored glass article of aspect A1, wherein the thickness t is greater than or equal to 0.5 mm and less than or equal to 5 mm.

Aspect A3 includes the colored glass article of any preceding aspect, wherein a colored glass article having the same composition and microstructure as a center of the colored glass article has a fracture toughness K_ICgreater than or equal to 0.7 MPa·m^1/2.

Aspect A4 includes the colored glass article of any preceding aspect comprising an average transmittance of greater than or equal to 10% and less than or equal to 92% over the wavelength range of 380 nm to 750 nm.

Aspect A5 includes the colored glass article of any preceding aspect further comprising at least one crystalline phase.

Aspect A6 includes the colored glass article of any preceding aspect comprising a crystallinity of less than 10 wt %.

Aspect A7 includes the colored glass article of any preceding aspect, wherein the depth of compression is less than or equal to 0.3t.

Aspect A8 includes the colored glass article of any preceding aspect, wherein the surface compressive stress is greater than or equal to 400 MPa.

Aspect A9 includes the colored glass article of any preceding aspect, wherein the central tension is greater than or equal to 70 MPa.

Aspect A10 includes the colored glass article of any preceding aspect, wherein the transmittance color coordinate in the CIELAB color space comprises an a* value and |a*| is ≥0.3.

Aspect A11 includes the colored glass article of any preceding aspect, wherein the transmittance color coordinate in the CIELAB color space comprises a b* value and |b*| is ≥0.5.

Aspect A12 includes the colored glass article of any preceding aspect, wherein the transmittance color coordinate in the CIELAB color space comprises an a* value and a b* value, wherein |a*| is ≥0.3 and |b*| is ≥0.5.

Aspect A13 includes the colored glass article of any preceding aspect, wherein the transmittance color coordinate in the CIELAB color space comprises a* and b* values within a region of a plot of a* vs. b* bound by the intersection of lines: b*=0.2879·a*+27.818; b*=7.0833·a*−94.5; b*=0.45·a*+104.5; and b*=15.3·a*+253.

Aspect A14 includes the colored glass article of aspect A13, wherein the colorant comprises Ag.

Aspect A15 includes the colored glass article of any of aspects A1-A12, wherein the transmittance color coordinate in the CIELAB color space comprises a* and b* values within a region of a plot of a* vs. b* bound by the intersection of lines: b*=7.0833·a*−94.5; b*=−0.9583·a*+146.75; b*=2.6957·a*−50.565; and b*=33.

Aspect A16 includes the colored glass article of aspect A15 wherein the colorant comprises Ag.

Aspect A17 includes the colored glass article of any of aspects A1-A12, wherein the transmittance color coordinate in the CIELAB color space comprises a* and b* values within a region of a plot of a* vs. b* bound by the intersection of lines: b*=2.6957·a*−50.565; a*=54; b*=1.0769·a*−17.154; and b*=6.6667·a*−173.67.

Aspect A18 includes the colored glass article of aspect A17 wherein the colorant comprises Ag.

Aspect A19 includes the colored glass article of any of aspects A1-A12, wherein the transmittance color coordinate in the CIELAB color space comprises a* and b* values within a region of a plot of a* vs. b* bound by the intersection of lines: b*=0.2879·a*+27.818; a*=0; b*=−1.375·a*+1; and b*=9.333·a*+86.667, exclusive of a* greater than −0.3 and less than 0.3 and exclusive of b* greater than −0.5 and less than 0.5.

Aspect A20 includes the colored glass article of aspect A19, wherein the colorant comprises Ag.

Aspect A21 includes the colored glass article of any of aspects A1-A12, wherein the transmittance color coordinate in the CIELAB color space comprises a* and b* values within a region of a plot of a* vs. b* bound by the intersection of lines: b*=0.0833·a*+20.833; b*=2.1182·a*−32.073; b*=−0.3; and b*=1.5929·a*−0.3, exclusive of a* greater than −0.3 and less than 0.3 and exclusive of b* greater than −0.5 and less than 0.5.

Aspect A22 includes the colored glass article of aspect A21, wherein the colorant comprises Ag.

Aspect A23 includes the colored glass article of any of aspects A1-A12, wherein the transmittance color coordinate in the CIELAB color space comprises a* values greater than or equal to −18 and less than or equal to 0.3 and b* values greater than or equal to 0.5 and less than or equal to 82.

Aspect A24 includes the colored glass article of claim A23, wherein the colorant comprises Cr₂O₃.

Aspect A25 includes the colored glass article of any of aspects A1-A12, wherein the transmittance color coordinate in the CIELAB color space comprises a* values greater than or equal to −18 and less than or equal to 18, exclusive of a* greater than −0.3 and less than 0.3, and b* greater than or equal to 0.5 and less than or equal to 82.

Aspect A26 includes the colored glass article of aspect A25, wherein the colorant comprises Cr₂O₃and NiO.

Aspect A27 includes the colored glass article of any of aspects A1-A12, wherein the transmittance color coordinate in the CIELAB color space comprises a* values greater than or equal to −20 and less than or equal to 60, exclusive of a* greater than −0.3 and less than 0.3, and b* greater than or equal to −90 and less than or equal to 85, exclusive of b* values greater than −0.5 and less than 0.5.

Aspect A28 includes the colored glass article of aspect A27, wherein the colorant comprises Cr₂O₃and Co₃O₄.

Aspect A29 includes the colored glass article of any of aspects A1-A12, wherein the transmittance color coordinate in the CIELAB color space comprises a* values greater than or equal to −35 and less than or equal to −0.3, and b* values greater than or equal to 0.5 and less than or equal to 82.

Aspect A30 includes the colored glass article of aspect A29, wherein the colorant comprises Cr₂O₃and CuO.

Aspect A31 includes the colored glass article of any of aspects A1-A12, wherein the transmittance color coordinate in the CIELAB color space comprises a* values greater than or equal to −35 and less than or equal to 20, exclusive of a* greater than −0.3 and less than 0.3, and b* values greater than or equal to 0.5 and less than or equal to 75.

Aspect A32 includes the colored glass article of aspect A31, wherein the colorant comprises Cr₂O₃, NiO, and CuO.

Aspect A33 includes the colored glass article of any of aspects A1-A12, wherein the transmittance color coordinate in the CIELAB color space comprises a* values greater than or equal to −15 and less than or equal to 65, exclusive of a* greater than −0.3 and less than 0.3, and b* values greater than or equal to −90 and less than or equal to 80, exclusive of b* greater than −0.5 and less than 0.5.

Aspect A34 includes the colored glass article of aspect A33, wherein the colorant comprises Cr₂O₃, NiO, and Co₃O₄.

Aspect A35 includes the colored glass article of any of aspects A1-A12, wherein the transmittance color coordinate in the CIELAB color space comprises a* values greater than or equal to −35 and less than or equal to 60, exclusive of a* greater than −0.3 and less than 0.3, and b* values greater than or equal to −90 and less than or equal to 80, exclusive of b* greater than −0.5 and less than 0.5.

Aspect A36 includes the colored glass article of aspect A35, wherein the colorant comprises Cr₂O₃, CuO, and Co₃O₄.

Aspect A37 includes the colored glass article of any of aspects A1-A12, wherein the transmittance color coordinate in the CIELAB color space comprises a* values greater than or equal to −35 and less than or equal to 60, exclusive of a* greater than −0.3 and less than 0.3, and b* values greater than or equal to −90 and less than or equal to 80, exclusive of b* greater than −0.5 and less than 0.5.

Aspect A38 includes the colored glass article of aspect A37, wherein the colorant comprises Cr₂O₃, NiO, CuO, and Co₃O₄.

Aspect A39 includes the colored glass article of any of aspects A1-A12, wherein the transmittance color coordinate in the CIELAB color space comprises a* values greater than or equal to −15 and less than or equal to −0.3 and b* values greater than or equal to −10 and less than or equal to 10, exclusive of b* greater than −0.5 and less than 0.5.

Aspect A40 includes the colored glass article of aspect A39, wherein the colorant comprises at least one of NiO, CuO, TiO₂, Co₃O₄, Cr₂O₃, and CeO₂.

Aspect A41 includes the colored glass article of any of aspects A1-A12, wherein the transmittance color coordinate in the CIELAB color space comprises a* values greater than or equal to −5 and less than or equal to 25, exclusive of a* greater than −0.3 and less than 0.3, and b* greater than or equal to −20 and less than or equal to 5, exclusive of b* greater than −0.5 and less than 0.5.

Aspect A42 includes the colored glass article of aspect A41, wherein the colorant comprises Au.

Aspect A43 includes the colored glass article of any of aspects A1-A12, wherein the transmittance color coordinate in the CIELAB color space comprises a* values greater than or equal to −10 and less than or equal to 25, exclusive of a* greater than −0.3 and less than 0.3, and b* values greater than or equal to −20 and less than or equal to 5, exclusive of b* greater than −0.5 and less than 0.5.

Aspect A44 includes the colored glass article of aspect A43, wherein the colorant comprises Au.

Aspect A45 includes the colored glass article of any of aspects A1-A12, wherein the transmittance color coordinate in the CIELAB color space comprises a* values greater than or equal to −15 and less than or equal to −0.3, and b* values greater than or equal to −10 and less than or equal to 10, exclusive of b* greater than −0.5 and less than 0.5.

Aspect A46 includes the colored glass article of aspect A45, wherein the colorant comprises at least one of Cr₂O₃, Au, Ag, CuO, NiO, Co₃O₄, TiO₂, and CeO₂.

Aspect A47 includes an electronic device comprising a housing, the housing comprising a colored glass article according to any preceding aspect.

Additional features and advantages of the colored glass articles described herein will be set forth in the detailed description that follows, and in part will be readily apparent to those skilled in the art from that description or recognized by practicing the embodiments described herein, including the detailed description which follows, the claims, as well as the appended drawings.

It is to be understood that both the foregoing general description and the following detailed description describe various embodiments and are intended to provide an overview or framework for understanding the nature and character of the claimed subject matter. The accompanying drawings are included to provide a further understanding of the various embodiments, and are incorporated into and constitute a part of this specification. The drawings illustrate the various embodiments described herein, and together with the description serve to explain the principles and operations of the claimed subject matter.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a plan view of an electronic device incorporating any of the colored glass articles according to one or more embodiments described herein;

FIG. 2 is a perspective view of the electronic device of FIG. 1;

FIG. 3A is a plot of a* vs. b* CIELAB space (x-axis: a*; y-axis: b*) as a function of a heat treatment temperature of a colored glass article made from a glass composition according to one or more embodiments described herein;

FIG. 3B is a plot of a projected a* vs. L* CIELAB space (x-axis: a*; y-axis: L*) of the colored glass article of FIG. 3A;

FIG. 3C is a plot of a projected b* vs. L* CIELAB space (x-axis: b*; y-axis: L*) of the colored glass article of FIG. 3A;

FIG. 4A is a plot of a* vs. b* CIELAB space (x-axis: a*; y-axis: b*) as a function of a heat treatment temperature of a colored glass article made from a glass composition according to one or more embodiments described herein;

FIG. 4B is a plot of a projected a* vs. L* CIELAB space (x-axis: a*; y-axis: L*) of the colored glass article of FIG. 4A;

FIG. 4C is a plot of a projected b* vs. L* CIELAB space (x-axis: b*; y-axis: L*) of the colored glass article of FIG. 4A;

FIG. 5A is a plot of a* vs. b* CIELAB space (x-axis: a*; y-axis: b*) as a function of a heat treatment temperature of a colored glass article made from a glass composition according to one or more embodiments described herein;

FIG. 5B is a plot of a projected a* vs. L* CIELAB space (x-axis: a*; y-axis: L*) of the colored glass article of FIG. 5A;

FIG. 5C is a plot of a projected b* vs. L* CIELAB space (x-axis: b*; y-axis: L*) of the colored glass article of FIG. 5A;

FIG. 6A is a plot of a* vs. b* CIELAB space (x-axis: a*; y-axis: b*) as a function of a heat treatment temperature of a colored glass article made from a glass composition according to one or more embodiments described herein;

FIG. 6B is a plot of a projected a* vs. L* CIELAB space (x-axis: a*; y-axis: L*) of the colored glass article of FIG. 6A;

FIG. 6C is a plot of a projected b* vs. L* CIELAB space (x-axis: b*; y-axis: L*) of the colored glass article of FIG. 6A;

FIG. 7 is a plot of R₂O—Al₂O₃vs. a* CIELAB space (x-axis: R₂O—Al₂O₃; y-axis: a*) of colored glass articles made from glass compositions and subjected to a heat treatment according to one or more embodiments described herein;

FIG. 8 is a plot of R₂O—Al₂O₃vs. b* CIELAB space (x-axis: R₂O—Al₂O₃; y-axis: b*) of colored glass articles made from glass compositions and subjected to a heat treatment according to one or more embodiments described herein;

FIG. 9 is a plot of a projected a* vs. b* CIELAB space (x-axis: a*; y-axis: b*) of a colored glass article made from a glass composition according to one or more embodiments described herein;

FIG. 10 is a plot of a projected a* vs. L* CIELAB space (x-axis: a*; y-axis: L*) of the colored glass article of FIG. 9;

FIG. 11 is a plot of a projected b* vs. L* CIELAB space (x-axis: b*; y-axis: L*) of the colored glass article of FIG. 9;

FIG. 12 is a plot of a projected a* vs. b* CIELAB space (x-axis: a*; y-axis: b*) of a colored glass article made from a glass composition according to one or more embodiments described herein;

FIG. 13 is a plot of a projected a* vs. L* CIELAB space (x-axis: a*; y-axis: L*) of the colored glass article of FIG. 12;

FIG. 14 is a plot of a projected b* vs. L* CIELAB space (x-axis: b*; y-axis: L*) of the colored glass article of FIG. 12;

FIG. 15 is a plot of a projected a* vs. b* CIELAB space (x-axis: a*; y-axis: b*) of a colored glass article made from a glass composition according to one or more embodiments described herein;

FIG. 16 is a plot of a projected a* vs. L* CIELAB space (x-axis: a*; y-axis: L*) of the colored glass article of FIG. 15;

FIG. 17 is a plot of a projected b* vs. L* CIELAB space (x-axis: b*; y-axis: L*) of the colored glass article of FIG. 15;

FIG. 18 is a plot of a projected a* vs. b* CIELAB space (x-axis: a*; y-axis: b*) of a colored glass article made from a glass composition according to one or more embodiments described herein;

FIG. 19 is a plot of a projected a* vs. L* CIELAB space (x-axis: a*; y-axis: L*) of the colored glass article of FIG. 18;

FIG. 20 is a plot of a projected b* vs. L* CIELAB space (x-axis: b*; y-axis: L*) of the colored glass article of FIG. 18;

FIG. 21 is a plot of a projected a* vs. b* CIELAB space (x-axis: a*; y-axis: b*) of a colored glass article made from a glass composition according to one or more embodiments described herein;

FIG. 22 is a plot of a projected a* vs. L* CIELAB space (x-axis: a*; y-axis: L*) of the colored glass article of FIG. 21;

FIG. 23 is a plot of a projected b* vs. L* CIELAB space (x-axis: b*; y-axis: L*) of the colored glass article of FIG. 21;

FIG. 24 is a plot of a projected a* vs. b* CIELAB space (x-axis: a*; y-axis: b*) of a colored glass article made from a glass composition according to one or more embodiments described herein;

FIG. 25 is a plot of a projected a* vs. L* CIELAB space (x-axis: a*; y-axis: L*) of the colored glass article of FIG. 24;

FIG. 26 is a plot of a projected b* vs. L* CIELAB space (x-axis: b*; y-axis: L*) of the colored glass article of FIG. 24;

FIG. 27 is a plot of a projected a* vs. b* CIELAB space (x-axis: a*; y-axis: b*) of a colored glass article made from a glass composition according to one or more embodiments described herein;

FIG. 28 is a plot of a projected a* vs. L* CIELAB space (x-axis: a*; y-axis: L*) of the colored glass article of FIG. 27;

FIG. 29 is a plot of a projected b* vs. L* CIELAB space (x-axis: b*; y-axis: L*) of the colored glass article of FIG. 27;

FIG. 30 is a plot of a projected a* vs. b* CIELAB space (x-axis: a*; y-axis: b*) of a colored glass article made from a glass composition according to one or more embodiments described herein;

FIG. 31 is a plot of a projected a* vs. L* CIELAB space (x-axis: a*; y-axis: L*) of the colored glass article of FIG. 30;

FIG. 32 is a plot of a projected b* vs. L* CIELAB space (x-axis: b*; y-axis: L*) of the colored glass article of FIG. 30;

FIG. 33A graphically depicts a plot of projected a* vs. L* CIELAB spaces (y-axis: a*; x-axis: L*) of colored glass articles according to one or more embodiments of the present disclosure;

FIG. 33B graphically depicts a plot of projected b* vs. L* CIELAB spaces (y-axis: b*; x-axis: L*) of colored glass articles according to one or more embodiments of the present disclosure;

FIG. 33C graphically depicts a plot of projected a* vs. b* CIELAB spaces (y-axis: b*; x-axis: a*) of colored glass articles according to one or more embodiments of the present disclosure;

FIG. 34A graphically depicts a plot of projected a* vs. L* CIELAB spaces (y-axis: a*; x-axis: L*) of colored glass articles according to one or more embodiments of the present disclosure;

FIG. 34B graphically depicts a plot of projected b* vs. L* CIELAB spaces (y-axis: b*; x-axis: L*) of colored glass articles according to one or more embodiments of the present disclosure;

FIG. 34C graphically depicts a plot of projected a* vs. b* CIELAB spaces (y-axis: b*; x-axis: a*) of colored glass articles according to one or more embodiments of the present disclosure;

FIG. 35 graphically depicts absorbance spectra (y-axis) as a function of wavelength (x-axis) of colored glass articles according to one or more embodiments of the present disclosure;

FIG. 36 graphically depicts absorbance spectra (y-axis) as a function of wavelength (x-axis) of colored glass articles according to one or more embodiments of the present disclosure;

FIG. 37 graphically depicts absorbance spectra (y-axis) as a function of wavelength (x-axis) of colored glass articles according to one or more embodiments of the present disclosure;

FIG. 38 graphically depicts absorbance spectra (y-axis) as a function of wavelength (x-axis) of colored glass articles according to one or more embodiments of the present disclosure;

FIG. 39 graphically depicts absorbance (y-axis) as a function of wavelength (x-axis) spectra of colored glass articles according to one or more embodiments of the present disclosure;

FIG. 40A graphically depicts a plot of a projected a* vs. L* CIELAB space (y-axis: a*; x-axis: L*) of a colored glass article according to one or more embodiments of the present disclosure;

FIG. 40B graphically depicts a plot of a projected b* vs. L* CIELAB space (y-axis: b*; x-axis: L*) of a colored glass article according to one or more embodiments of the present disclosure;

FIG. 40C graphically depicts a plot of a projected a* vs. b* CIELAB space (y-axis: b*; x-axis: a*) of a colored glass article according to one or more embodiments of the present disclosure;

FIG. 41 graphically depicts an absorbance spectra (y-axis) as a function of wavelength (x-axis) of colored glass articles according to one or more embodiments of the present disclosure;

FIG. 42A graphically depicts a plot of a projected b* vs. L* CIELAB space (y-axis: b*; x-axis: L*) of a colored glass article according to one or more embodiments of the present disclosure;

FIG. 42B graphically depicts a plot of a projected a* vs. b* CIELAB space (y-axis: b*; x-axis: a*) of a colored glass article according to one or more embodiments of the present disclosure;

FIG. 42C graphically depicts a plot of a projected a* vs. L* CIELAB space (y-axis: a*; x-axis: L*) of a colored glass article according to one or more embodiments of the present disclosure;

FIG. 43 graphically depicts an absorbance spectra (y-axis) as a function of wavelength (x-axis) of a colored glass article according to one or more embodiments of the present disclosure;

FIG. 44A is a transmission electron microscopy (TEM) micrograph of anisotropic silver particles in a colored glass article according to one or more embodiments of the present disclosure;

FIG. 44B is a magnified view of a portion of the TEM micrograph of FIG. 44A showing an anisotropic silver particle in a colored glass article according to one or more embodiments of the present disclosure;

FIG. 44C is a magnified view of a portion of the TEM micrograph of FIG. 44B showing an anisotropic silver particle in a colored glass article according to one or more embodiments of the present disclosure;

FIG. 45 graphically depicts a transmittance spectra (y-axis) as a function of wavelength (x-axis) of a colored glass article heat treated at the same temperature for different heat treatment times, according to one or more embodiments of the present disclosure;

FIG. 46 graphically depicts a transmittance spectra (y-axis) as a function of wavelength (x-axis) of a colored glass article according to one or more embodiments of the present disclosure;

FIG. 47 graphically depicts a transmittance spectra (y-axis) as a function of wavelength (x-axis) of a colored glass article according to one or more embodiments of the present disclosure;

FIG. 48 is graphically depicts a plot of a projected a* vs. b* CIELAB space (y-axis: b*; x-axis: a*) of colored glass articles according to one or more embodiments of the present disclosure;

FIG. 49 is a schematic representation of a sample utilized in the double cantilever beam (DCB) procedure to determine the fracture toughness κ_ICand a cross-section thereof;

FIG. 50 graphically depicts the results of an incremental face drop on sandpaper (i.e., a “drop test”) for select inventive examples and a comparative example; and

FIG. 51 schematically depicts a drop test conducted on ion exchange strengthened colored glass articles.

DETAILED DESCRIPTION

Reference will now be made in detail to various embodiments of glass compositions and colored glass articles formed therefrom having a desired color. According to embodiments, a colored glass article includes: greater than or equal to 50 mol % and less than or equal to 80 mol % SiO₂; greater than or equal to 7 mol % and less than or equal to 20 mol % Al₂O₃; greater than or equal to 1 mol % and less than or equal to 35 mol % R₂O, wherein R₂O comprises at least one of Li₂O, Na₂O, and K₂O; greater than 1×10⁻⁶mol % and less than or equal to 10 mol % of a colorant, wherein the colorant comprises at least one of Cr₂O₃, Au, Ag, CuO, NiO, Co₃O₄, TiO₂, CeO₂; and greater than or equal to 12 mol % and less than or equal to 24 mol % of Al₂O₃+MgO+CaO+ZnO. The colored glass article may further include a transmittance color coordinate in the CIELAB color space comprising an L* value greater than or equal to 55 and less than or equal to 96.5 as measured under F2 illumination and a 10° standard observer angle; a compressive stress profile with a depth of compression greater than or equal to 0.15t where t is a thickness of the colored glass article, a compressive stress greater than or equal to 200 MPa, and a central tension greater than or equal to 60 MPa; a dielectric constant from 5.6 to 6.4 over a frequency range from 10 GHz to 60 GHz; and the thickness t is greater than or equal to 0.4 mm and less than or equal to 5 mm. Various embodiments of colored glass articles will be described herein with specific reference to the appended drawings.

Ranges may be expressed herein as from “about” one particular value, and/or to “about” another particular value. When such a range is expressed, another embodiment includes from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent “about,” it will be understood that the particular value forms another embodiment. It will be further understood that the endpoints of each of the ranges are significant both in relation to the other endpoint, and independently of the other endpoint.

Directional terms as used herein—for example up, down, right, left, front, back, top, bottom—are made only with reference to the figures as drawn and are not intended to imply absolute orientation.

Unless otherwise expressly stated, it is in no way intended that any method set forth herein be construed as requiring that its steps be performed in a specific order, nor that with any apparatus specific orientations be required. Accordingly, where a method claim does not actually recite an order to be followed by its steps, or that any apparatus claim does not actually recite an order or orientation to individual components, or it is not otherwise specifically stated in the claims or description that the steps are to be limited to a specific order, or that a specific order or orientation to components of an apparatus is not recited, it is in no way intended that an order or orientation be inferred, in any respect. This holds for any possible non-express basis for interpretation, including: matters of logic with respect to arrangement of steps, operational flow, order of components, or orientation of components; plain meaning derived from grammatical organization or punctuation, and; the number or type of embodiments described in the specification.

As used herein, the singular forms “a,” “an” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a” component includes aspects having two or more such components, unless the context clearly indicates otherwise.

In the embodiments of the glass compositions and the resultant colored glass articles described herein, the concentrations of constituent components in oxide form (e.g., SiO₂, Al₂O₃, and the like) are specified in mole percent (mol %) on an oxide basis, unless otherwise specified.

In embodiments of the glass compositions and the resultant colored glass articles described herein, the concentrations of Au and Cl are specified in mole percent (mol %), unless otherwise specified.

In embodiments of the glass compositions and the resultant colored glass articles described herein, the concentration of a cation “M” is specified in mole percent (mol %), unless otherwise specified.

The term “substantially free,” when used to describe the concentration and/or absence of a particular constituent component in a glass composition and the resultant colored glass article, means that the constituent component is not intentionally added to the glass composition and the resultant colored glass article. However, the glass composition and the resultant colored glass article may contain traces of the constituent component as a contaminant or tramp in amounts of less than 200 ppm unless specified otherwise herein. It is noted that the definition of “substantially free” is exclusive of gold (Au) which may be intentionally added to the glass composition in relatively small amounts such as, for example and without limitation, amounts less than 200 ppm (or the equivalent in mol %) to achieve a desired color in the resultant colored glass article.

The terms “0 mol %” and “free,” when used to describe the concentration and/or absence of a particular constituent component in a glass composition, means that the constituent component is not present in the glass composition.

Fracture toughness (K_IC) represents the ability of a glass composition to resist fracture. Fracture toughness is measured on a non-strengthened glass article, such as measuring the K_ICvalue prior to ion exchange (IOX) treatment of the glass article, thereby representing a feature of a glass substrate prior to IOX. The fracture toughness test methods described herein are not suitable for glasses that have been exposed to IOX treatment. Accordingly, where the fracture toughness of an ion exchanged article is referred to, it means the fracture toughness of a non-ion exchanged article with the same composition and microstructure (when present) as the center (i.e., a point located at least 0.5t from every surface of the article or substrate where t is the thickness of the article or substrate) of the ion exchanged article (which corresponds to the portion of the ion exchanged article least affected by the ion exchange process and, hence, a composition and microstructure comparable to a non-ion exchanged glass). Fracture toughness is measured by the chevron notched short bar method. The chevron notched short bar (CNSB) method is disclosed in Reddy, K. P. R. et al, “Fracture Toughness Measurement of Glass and Ceramic Materials Using Chevron-Notched Specimens,” J. Am. Ceram. Soc., 71 [6], C-310-C-313 (1988) except that Y*_mis calculated using equation 5 of Bubsey, R. T. et al., “Closed-Form Expressions for Crack-Mouth Displacement and Stress Intensity Factors for Chevron-Notched Short Bar and Short Rod Specimens Based on Experimental Compliance Measurements,” NASA Technical Memorandum 83796, pp. 1-30 (October 1992). Unless otherwise specified, all fracture toughness values were measured by chevron notched short bar (CNSB) method.

Alternative K_ICfracture toughness measurements were performed on some samples with the double cantilever beam (DCB) procedure. The DCB specimen geometry is shown in FIG. 49 with parameters being the crack length a, applied load P, cross-sectional dimensions w and 2h, and the thickness of the crack-guiding groove b. The samples were cut into rectangles of width 2h=1.25 cm and a thickness ranging from, w=0.3 mm to 1 mm, with the overall length of the sample, which is not a critical dimension, varying from 5 cm to 10 cm. A hole was drilled on both ends with a diamond drill to provide a means of attaching the sample to a sample holder and to the load. A crack “guiding groove” was cut down the length of the sample on both flat faces using a wafer dicing saw with a diamond blade, leaving a “web” of material, approximately half the total plate thickness (dimension b in FIG. 49), with a height of 180 μm corresponding to the blade thickness. The high precision dimensional tolerances of the dicing saw allow for minimal sample-to-sample variation. The dicing saw was also used to cut an initial crack where a=15 mm. As a consequence of this final operation a very thin wedge of material was created near the crack tip (due to the blade curvature) allowing for easier crack initiation in the sample. The samples were mounted in a metal sample holder with a steel wire in the bottom hole of the sample. The samples were also supported on the opposite end to keep the samples level under low loading conditions. A spring in series with a load cell (FUTEK, LSB200) was hooked to the upper hole which was then extended, to gradually apply load, using rope and a high precision slide. The crack was monitored using a microscope having a 5 μm resolution attached to a digital camera and a computer. The applied stress intensity, K_P, was calculated using the following equation:

$K_{P} = [\frac{P \cdot a}{{(w \cdot b)}^{0.5} h^{1.5}}] [3.4 7 + 2.3 2 \frac{h}{a}]$

For each sample, a crack was first initiated at the tip of the web, and then the starter crack was carefully sub-critically grown until the ratio of dimensions a/h was greater than 1.5 to accurately calculate stress intensity. At this point the crack length, a, was measured and recorded using a traveling microscope with 5 μm resolution. A drop of toluene was then placed into the crack groove and wicked along the length of the groove by capillary forces, pinning the crack from moving until the fracture toughness is reached. The load was then increased until sample fracture occurred, and the critical stress intensity K_ICcalculated from the failure load and sample dimensions, with K_Pbeing equivalent to K_ICdue to the measurement method.

The viscosity of the glass composition, as described herein, is measured according to ASTM C965-96.

The term “melting point,” as used herein, refers to the temperature at which the viscosity of the glass composition is 200 poise.

The term “softening point,” as used herein, refers to the temperature at which the viscosity of the glass composition is 1×10^7.6poise. The softening point is measured according to the parallel plate viscosity method which measures the viscosity of inorganic glass from 10⁷to 10⁹poise as a function of temperature, similar to ASTM C1351M.

The term “annealing point” as used herein, refer to the temperature at which the viscosity of the glass composition is 1×10^13.18poise.

The term “strain point,” as used herein, refers to the temperature at which the viscosity of the glass composition is 1×10^14.68poise.

The term “coefficient of thermal expansion” and “CTE,” as described herein, is measured in accordance with ASTM E228-85 over the temperature range of 25° C. to 300° C. and is expressed in terms of “×10⁻⁷/° C.” as an average over the temperature range.

The term “liquidus viscosity,” as used herein, refers to the viscosity of the glass composition at the onset of devitrification (i.e., at the liquidus temperature as determined with the gradient furnace method according to ASTM C829-81).

The term “liquidus temperature,” as used herein, refers to the temperature at which the glass composition begins to devitrify as determined with the gradient furnace method according to ASTM C829-81.

Surface compressive stress is measured with a surface stress meter (FSM) such as commercially available instruments such as the FSM-6000, manufactured by Orihara Industrial Co., Ltd. (Japan). Surface stress measurements rely upon the measurement of the stress optical coefficient (SOC), which is related to the birefringence of the glass article. SOC, in turn, is measured according to Procedure C (Glass Disc Method) described in ASTM standard C770-16, entitled “Standard Test Method for Measurement of Glass Stress-Optical Coefficient,” the contents of which are incorporated herein by reference in their entirety. Depth of compression (DOC) is also measured with the FSM. The maximum central tension (CT) values are measured using a scattered light polariscope (SCALP) technique known in the art.

The term “depth of compression” (DOC), as used herein, refers to the position in the article where compressive stress transitions to tensile stress.

Transmittance data (total transmittance and diffuse transmittance) in the visible spectrum is measured with a Lambda 950 UV/Vis/NIR Spectrophotometer manufactured by PerkinElmer Inc. (Waltham, Mass. USA). The Lambda 950 apparatus was fitted with a 150 mm integrating sphere. Data was collected using an open beam baseline and a Spectralon® reference reflectance disk. For total transmittance (Total Tx), the sample is fixed at the integrating sphere entry point.

The term “average transmittance,” as used herein with respect to the visible spectrum, refers to the average of transmittance measurements made within a given wavelength range with each whole numbered wavelength weighted equally. In embodiments described herein, the “average transmittance” with respect to the visible spectrum is reported over the wavelength range from 380 nm to 750 nm (inclusive of endpoints). Unless otherwise specified, the average transmittance is indicated for article thicknesses from 0.4 mm to 5 mm, inclusive of endpoints. Unless otherwise specified, when average transmittance is indicated, this means that each thickness within the range of thicknesses from 0.4 mm to 5 mm has an average transmittance as specified. For example, colored glass articles having average transmittances of 10% to 92% over the wavelength range from 380 nm to 750 nm means that each thickness within the range of 0.4 mm to 5 mm (e.g., 0.6 mm, 0.9 mm, 2 mm, etc.) has an average transmittance in the range of 10% to 92% for the wavelength range from 380 nm to 750 nm.

The term “CIELAB color space,” as used herein, refers to a color space defined by the International Commission on Illumination (CIE) in 1976. It expresses color as three values: L* for the lightness from black (0) to white (100), a* from green (−) to red (+), and b* from blue (−) to yellow (+). Unless otherwise specified, the L*, a*, and b* values are indicated for article thicknesses of 0.4 mm to 5 mm (inclusive of endpoints) in the thickness direction of the sample under F2 illumination and a 10° standard observer angle. Unless otherwise specified, this means that each thickness within the range of thicknesses has L*, a*, and b* coordinates falling within the specified range(s) for L*, a*, and b* coordinates. For example, a colored glass article having an L* value within the range from 55 to 96.5 means that each thickness within the range of 0.4 mm to 5 mm (e.g., 0.6 mm, 0.9 mm, 2 mm, etc.) has an L* in the range of 55 to 96.5.

The term “color gamut,” as used herein, refers to the pallet of colors that may be achieved by the colored glass articles within the CIELAB color space.

The “optical transmission spectra,” described herein, were obtained using an Agilent Cary 60 spectrophotometer with a scan range of 250 nm to 800 nm, a scan step of 2 nm, a signal average of 0.5 s, and a spot size of 2 mm. The optical transmission data obtained were used to plot coordinates in the CIELAB color space as described in R. S. Berns, Billmeyer and Saltzman's Principles of Color Technology, 3rd. Ed., John Wiley & Sons, New York (2000).

The term “projected color gamut,” as used herein, refers to the line, surface, volume, or overlapping volume occupied by the colored glass article within the three-dimensional CIELAB color space and represents the pallet of colors that may be achieved by the colored glass articles within the CIELAB color space based upon the concentration of colorant(s) present in the colored glass article. The projected color gamuts shown herein were produced using the plotting routine Gnuplot Version 5.4. Specifically, Gnuplot was used to display projections of the CIELAB color coordinates for the transmitted colors under F2 illumination for the CIE 1976 10° Standard Observer. The transmittance spectrum through a flat sheet of glass is given by the following expression:

$T (λ) = \frac{{[1 - R (λ)]}^{2} \times \exp [- \sum_{i} N_{i} σ_{i} (λ) t]}{1 - {R (λ)}^{2} \times \exp [- 2 \sum_{i} N_{i} σ_{i} (λ) t]},$

where R is the Fresnel intensity reflection coefficient of the glass, N_iand σ_irepresent the number density and absorption cross section, respectively, for the individual dopants, λ is the optical wavelength, and t is the thickness of the glass. The color coordinates were calculated from the transmittance spectra through 1.5 mm of the colored glass article. The expression for the transmittance was evaluated by varying the dopant concentrations (N_i) for the combinations of the colorants from 0 to a maximum value. As described herein, the maximum values for Cr₂O₃, NiO, CuO, and Co₃O₄were set to 2 mol %, 4 mol %, 20 mol %, and 2 mol %, respectively for purposes of determining the projected color gamut.

The dielectric constant of the colored glass articles may be measured using a split post dielectric resonator (SPDR), as is known in the art, at a frequency of 10 GHz. The dielectric constant was measured on samples of the colored glass article having a length of 3 inches (76.2 mm), a width of 3 inches (76.2 mm), and a thickness of less than 0.9 mm.

The dielectric constant of the colored glass articles may also be measured over a range of frequencies from 10 GHz to 60 GHz using a double concave reflecting mirror Fabry-Perot open resonator, as is known in the art. The dielectric constant can be measured at different frequencies by adjusting the mirror spacing in the open resonator. The dielectric constant may be measured on samples of the colored glass article having a length of 120 mm, a width of 120 mm, and a thickness of 2 mm or less. While not wishing to be bound by theory, it is believed that the dielectric constant of the colored glass articles measured at 10 GHz approximates the dielectric constant at each frequency in the range from 10 GHz to 60 GHz.

The dielectric constant Dk of the colored glass article may be calculated according to the equation:

Dk=3.802946+0.01747*B₂O₃(mol %)+0.058769*Al₂O₃(mol %)+0.080876*Li₂O (mol %)+0.148433*Na₂O (mol %)+0.153264*K₂O (mol %)+0.045179*MgO (mol %)+0.080113*CaO (mol %).

Colorants have been added to conventional aluminosilicate glass compositions to achieve glass articles having a desired color. However, such glass articles may not have the desired mechanical or electrical properties suitable for some end user applications. For example, glasses used in the housings of consumer electronic devices may require robust mechanical properties to withstand the rigors of day-to-day use and/or dielectric properties to allow for reception of wireless signals by the device.

Moreover, it may be desirable to have colored glass articles having mechanical and dielectric properties such that the glass article is suitable for use with consumer electronic devices while also providing the same colored glass articles in a range of different colors. However, simply including colorants in aluminosilicate glass compositions may not produce the desired color. For example, some colorants may have relatively low vaporization temperatures and may vaporize and diffuse out of the glass during manufacturing. The relatively low retention of the colorant limits the color gamut that may be achieved.

Disclosed herein are glass compositions and colored glass articles formed therefrom having superior ion-exchange performance. The colored glass articles also have dielectric properties, such as dielectric constants, such that the glass articles are suitable for use as enclosures for consumer electronic devices such as smart phones, tablets, and computers. The use of various colorants and combinations of colorants expands the color gamut that may be achieved in the resultant colored glass articles

The glass compositions and colored glass articles described herein may be described as aluminoborosilicate glass compositions and colored glass articles and comprise SiO₂, Al₂O₃, and B₂O₃. In addition to SiO₂, Al₂O₃, and B₂O₃, the glass compositions and colored glass articles described herein include one or more colorants in a colorant package to impart a desired color to the resultant colored glass article. The glass compositions and colored glass articles described herein also include alkali oxides, such as Li₂O and Na₂O, to enable the ion-exchangeability of the colored glass articles. In embodiments, the glass compositions and colored glass articles described herein may further include other components to improve colorant retention and produce colored glass articles having the desired color. In embodiments, the difference between R₂O and Al₂O₃(i.e. R₂O (mol %)−Al₂O₃(mol %)) in the glass compositions and resultant colored glass articles described herein may be adjusted to produce a desired observable color (e.g., pink, purple, red, orange, or blue). In embodiments, the viscosity of the glass composition may be adjusted to prevent devitrification of the glass composition.

SiO₂is the primary glass former in the glass compositions described herein and may function to stabilize the network structure of the colored glass articles. The concentration of SiO₂in the glass compositions and resultant colored glass articles should be sufficiently high (e.g., greater than or equal to 40 mol %) to enhance the chemical durability of the glass composition and, in particular, the resistance of the glass composition to degradation upon exposure to acidic solutions, basic solutions, and in water. The amount of SiO₂may be limited (e.g., to less than or equal to 80 mol %) to control the melting point of the glass composition, as the melting point of pure SiO₂or high SiO₂glasses is undesirably high. Thus, limiting the concentration of SiO₂may aid in improving the meltability and the formability of the resultant colored glass article.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 40 mol % and less than or equal to 80 mol % SiO₂or even 50 mol % and less than or equal to 80 mol % SiO₂. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 45 mol % and less than or equal to 67 mol % SiO₂or even greater than or equal to 53 mol % and less than or equal to 67 mol % SiO₂. In embodiments, the concentration of SiO₂in the glass composition and the resultant colored glass article may be greater than or equal to 40 mol %, greater than or equal to 45 mol %, greater than or equal to 50 mol %, greater than or equal to 52 mol %, greater than or equal to 53 mol %, greater than or equal to 54 mol %, greater than or equal to 55 mol %, greater than or equal to 56 mol %, greater than or equal to 57 mol %, greater than or equal to 58 mol %, or even greater than or equal to 60 mol %. In embodiments, the concentration of SiO₂in the glass composition and the colored resultant glass article may be less than or equal to 80 mol %, less than or equal to 75 mol %, less than or equal to 73 mol %, less than or equal to 71 mol %, less than or equal to 70 mol %, less than or equal to 68 mol %, less than or equal to 67 mol %, less than or equal to 66 mol %, less than or equal to 65 mol %, less than or equal to 64 mol %, less than or equal to 63 mol %, less than or equal to 62 mol %, less than or equal to 61 mol %, less than or equal to 60 mol %, or even less than or equal to 59 mol %. In embodiments, the concentration of SiO₂in the glass composition and the resultant colored glass article may be greater than or equal to 40 mol % and less than or equal to 70 mol %, greater than or equal to 40 mol % and less than or equal to 67 mol %, greater than or equal to 40 mol % and less than or equal to 65 mol % greater than or equal to 40 mol % and less than or equal to 63 mol %, greater than or equal to 40 mol % and less than or equal to 62 mol %, greater than or equal to 40 mol % and less than or equal to 61 mol %, greater than or equal to 40 mol % and less than or equal to 60 mol %, greater than or equal to 45 mol % and less than or equal to 70 mol %, greater than or equal to 45 mol % and less than or equal to 67 mol %, greater than or equal to 45 mol % and less than or equal to 65 mol % greater than or equal to 45 mol % and less than or equal to 63 mol %, greater than or equal to 45 mol % and less than or equal to 62 mol %, greater than or equal to 45 mol % and less than or equal to 61 mol %, greater than or equal to 45 mol % and less than or equal to 60 mol %, greater than or equal to 50 mol % and less than or equal to 70 mol %, greater than or equal to 50 mol % and less than or equal to 67 mol %, greater than or equal to 50 mol % and less than or equal to 65 mol %, greater than or equal to 50 mol % and less than or equal to 63 mol %, greater than or equal to 50 mol % and less than or equal to 62 mol %, greater than or equal to 50 mol % and less than or equal to 61 mol %, greater than or equal to 50 mol % and less than or equal to 60 mol %, greater than or equal to 50 mol % and less than or equal to 59 mol %, greater than or equal to 53 mol % and less than or equal to 70 mol %, greater than or equal to 53 mol % and less than or equal to 67 mol %, greater than or equal to 53 mol % and less than or equal to 65 mol % greater than or equal to 53 mol % and less than or equal to 63 mol %, greater than or equal to 53 mol % and less than or equal to 62 mol %, greater than or equal to 53 mol % and less than or equal to 61 mol %, greater than or equal to 53 mol % and less than or equal to 60 mol %, greater than or equal to 53 mol % and less than or equal to 59 mol %, greater than or equal to 55 mol % and less than or equal to 70 mol %, greater than or equal to 55 mol % and less than or equal to 67 mol %, greater than or equal to 55 mol % and less than or equal to 65 mol % greater than or equal to 55 mol % and less than or equal to 63 mol %, greater than or equal to 55 mol % and less than or equal to 62 mol %, greater than or equal to 55 mol % and less than or equal to 61 mol %, greater than or equal to 55 mol % and less than or equal to 60 mol %, greater than or equal to 55 mol % and less than or equal to 59 mol %, greater than or equal to 56 mol % and less than or equal to 70 mol %, greater than or equal to 56 mol % and less than or equal to 67 mol %, greater than or equal to 56 mol % and less than or equal to 65 mol % greater than or equal to 56 mol % and less than or equal to 63 mol %, greater than or equal to 56 mol % and less than or equal to 62 mol %, greater than or equal to 56 mol % and less than or equal to 61 mol %, greater than or equal to 56 mol % and less than or equal to 60 mol %, greater than or equal to 56 mol % and less than or equal to 59 mol %, greater than or equal to 57 mol % and less than or equal to 70 mol %, greater than or equal to 57 mol % and less than or equal to 67 mol %, greater than or equal to 57 mol % and less than or equal to 65 mol % greater than or equal to 57 mol % and less than or equal to 63 mol %, greater than or equal to 57 mol % and less than or equal to 62 mol %, greater than or equal to 57 mol % and less than or equal to 61 mol %, greater than or equal to 57 mol % and less than or equal to 60 mol %, or even greater than or equal to 57 mol % and less than or equal to 59 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the concentration of SiO₂in the glass composition and the resultant colored glass article may be greater than or equal to 50 mol % and less than or equal to 80 mol %, greater than or equal to 50 mol % and less than or equal to 75 mol %, greater than or equal to 50 mol % and less than or equal to 73 mol %, greater than or equal to 50 mol % and less than or equal to 71 mol %, greater than or equal to 50 mol % and less than or equal to 69 mol %, greater than or equal to 52 mol % and less than or equal to 80 mol %, greater than or equal to 52 mol % and less than or equal to 75 mol %, greater than or equal to 52 mol % and less than or equal to 73 mol %, greater than or equal to 52 mol % and less than or equal to 71 mol %, greater than or equal to 52 mol % and less than or equal to 69 mol %, greater than or equal to 54 mol % and less than or equal to 80 mol %, greater than or equal to 54 mol % and less than or equal to 75 mol %, greater than or equal to 54 mol % and less than or equal to 73 mol %, greater than or equal to 54 mol % and less than or equal to 71 mol %, greater than or equal to 54 mol % and less than or equal to 69 mol %, greater than or equal to 56 mol % and less than or equal to 80 mol %, greater than or equal to 56 mol % and less than or equal to 75 mol %, greater than or equal to 56 mol % and less than or equal to 73 mol %, greater than or equal to 56 mol % and less than or equal to 71 mol %, greater than or equal to 56 mol % and less than or equal to 69 mol %, greater than or equal to 58 mol % and less than or equal to 80 mol %, greater than or equal to 58 mol % and less than or equal to 75 mol %, greater than or equal to 58 mol % and less than or equal to 73 mol %, greater than or equal to 58 mol % and less than or equal to 71 mol %, greater than or equal to 58 mol % and less than or equal to 69 mol %, greater than or equal to 50 mol % and less than or equal to 80 mol %, greater than or equal to 60 mol % and less than or equal to 75 mol %, greater than or equal to 60 mol % and less than or equal to 73 mol %, greater than or equal to 60 mol % and less than or equal to 71 mol %, or even greater than or equal to 60 mol % and less than or equal to 69 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the concentration of SiO₂in the glass composition and the resultant colored glass article may be greater than or equal to 52 mol % and less than or equal to 70 mol %, greater than or equal to 52 mol % and less than or equal to 68 mol %, greater than or equal to 52 mol % and less than or equal to 66 mol %, greater than or equal to 52 mol % and less than or equal to 65 mol %, greater than or equal to 52 mol % and less than or equal to 64 mol %, greater than or equal to 53 mol % and less than or equal to 70 mol %, greater than or equal to 53 mol % and less than or equal to 68 mol %, greater than or equal to 53 mol % and less than or equal to 66 mol %, greater than or equal to 53 mol % and less than or equal to 65 mol %, or greater than or equal to 53 mol % and less than or equal to 64 mol %, greater than or equal to 54 mol % and less than or equal to 70 mol %, greater than or equal to 54 mol % and less than or equal to 68 mol %, greater than or equal to 54 mol % and less than or equal to 66 mol %, greater than or equal to 54 mol % and less than or equal to 65 mol %, or greater than or equal to 54 mol % and less than or equal to 64 mol %, or any and all sub-ranges formed from these endpoints.

Like SiO₂, Al₂O₃may also stabilize the glass network and additionally provides improved mechanical properties and chemical durability to the glass composition and the resultant colored glass article. The amount of Al₂O₃may also be tailored to control the viscosity of the glass composition. Al₂O₃may be included such that the resultant glass composition has the desired fracture toughness (e.g., greater than or equal to 0.7 MPa·m^1/2). However, if the amount of Al₂O₃is too high (e.g., greater than 25 mol %), the viscosity of the glass melt may increase, thereby diminishing the formability of the colored glass article. In embodiments, if the amount of Al₂O₃is too high, the solubility of one or more colorants of the colorant package in the glass melt may decrease, resulting in the formation of undesirable crystal phases in the glass. For example and without limitation, when the colorant package includes Cr₂O₃, the solubility of Cr₂O₃in the glass melt may decrease with increasing Al₂O₃concentrations (e.g., concentrations greater than or equal to 17.5 mol %), leading to the precipitation of undesirable crystal phases. Without wishing to be bound by theory, it is hypothesized that similar behavior may occur with colorants other than Cr₂O₃.

Accordingly, in embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 7 mol % and less than or equal to 25 mol % Al₂O₃, greater than or equal to 7 mol % and less than or equal to 20 mol % Al₂O₃, or even greater than or equal to 8 mol % and less than or equal to 20 mol % Al₂O₃. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 10 mol % and less than or equal to 20 mol % Al₂O₃, greater than or equal to 10 mol % and less than or equal to 17.5 mol % Al₂O₃, or even greater than or equal to 12 mol % and less than or equal to 17.25 mol % Al₂O₃. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 11 mol % and less than or equal to 19 mol % Al₂O₃or greater than or equal to 14 mol % and less than or equal to 17 mol % Al₂O₃. In embodiments, the concentration of Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 7 mol %, greater than or equal to 8 mol %, greater than or equal to 9 mol %, greater than or equal to 10 mol %, greater than or equal to 11 mol %, greater than or equal to 12 mol %, greater than or equal to 12.5 mol %, greater than or equal to 13 mol %, greater than or equal to 13.5 mol %, greater than or equal to 14 mol %, greater than or equal to 14.5 mol %, greater than or equal to 15 mol %, greater than or equal to 15.5 mol %, or even greater than or equal to 16 mol %. In embodiments, the concentration of Al₂O₃in the glass composition and the resultant colored glass article may be less than or equal to 25 mol %, less than or equal to 23 mol %, less than or equal to 20 mol %, less than or equal to 19 mol %, less than or equal to 18 mol %, less than or equal to 17.5 mol %, less than or equal to 17.25 mol %, less than or equal to 17 mol %, less than or equal to 16.75 mol %, or even less than or equal to 16 mol %. In embodiments, the concentration of Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 8 mol % and less than or equal to 20 mol %, greater than or equal to 8 mol % and less than or equal to 18 mol % greater than or equal to 8 mol % and less than or equal to 17.5 mol %, greater than or equal to 8 mol % and less than or equal to 17 mol %, greater than or equal to 10 mol % and less than or equal to 20 mol %, greater than or equal to 10 mol % and less than or equal to 18 mol % greater than or equal to 10 mol % and less than or equal to 17.5 mol %, greater than or equal to 10 mol % and less than or equal to 17 mol %, greater than or equal to 12 mol % and less than or equal to 20 mol %, greater than or equal to 12 mol % and less than or equal to 18 mol % greater than or equal to 12 mol % and less than or equal to 17.5 mol %, greater than or equal to 12 mol % and less than or equal to 17 mol %, greater than or equal to 12.5 mol % and less than or equal to 20 mol %, greater than or equal to 12.5 mol % and less than or equal to 18 mol % greater than or equal to 12.5 mol % and less than or equal to 17.5 mol %, greater than or equal to 12.5 mol % and less than or equal to 17 mol %, greater than or equal to 13 mol % and less than or equal to 20 mol %, greater than or equal to 13 mol % and less than or equal to 18 mol % greater than or equal to 13 mol % and less than or equal to 17.5 mol %, greater than or equal to 13 mol % and less than or equal to 17 mol %, greater than or equal to 13.5 mol % and less than or equal to 20 mol %, greater than or equal to 13.5 mol % and less than or equal to 18 mol % greater than or equal to 13.5 mol % and less than or equal to 17.5 mol %, greater than or equal to 13.5 mol % and less than or equal to 17 mol %, greater than or equal to 14 mol % and less than or equal to 20 mol %, greater than or equal to 14 mol % and less than or equal to 18 mol % greater than or equal to 14 mol % and less than or equal to 17.5 mol %, or even greater than or equal to 14 mol % and less than or equal to 17 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the concentration of Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 7 mol % and less than or equal to 25 mol %, greater than or equal to 7 mol % and less than or equal to 23 mol %, greater than or equal to 7 mol % and less than or equal to 20 mol %, greater than or equal to 7 mol % and less than or equal to 17 mol %, greater than or equal to 9 mol % and less than or equal to 25 mol %, greater than or equal to 9 mol % and less than or equal to 23 mol %, greater than or equal to 9 mol % and less than or equal to 20 mol %, greater than or equal to 9 mol % and less than or equal to 17 mol %, greater than or equal to 11 mol % and less than or equal to 25 mol %, greater than or equal to 11 mol % and less than or equal to 23 mol %, greater than or equal to 11 mol % and less than or equal to 20 mol %, greater than or equal to 11 mol % and less than or equal to 17 mol %, greater than or equal to 13 mol % and less than or equal to 25 mol %, greater than or equal to 13 mol % and less than or equal to 23 mol %, greater than or equal to 13 mol % and less than or equal to 20 mol %, greater than or equal to 13 mol % and less than or equal to 17 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the concentration of Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 10 mol % and less than or equal to 17.5 mol %, greater than or equal to 10 mol % and less than or equal to 17.25 mol %, greater than or equal to 10 mol % and less than or equal to 17 mol %, greater than or equal to 10 mol % and less than or equal to 16.75 mol %, greater than or equal to 12 mol % and less than or equal to 17.5 mol %, greater than or equal to 12 mol % and less than or equal to 17.25 mol %, greater than or equal to 12 mol % and less than or equal to 17 mol %, greater than or equal to 12 mol % and less than or equal to 16.75 mol %, greater than or equal to 14 mol % and less than or equal to 17.5 mol %, greater than or equal to 14 mol % and less than or equal to 17.25 mol %, greater than or equal to 14 mol % and less than or equal to 17 mol %, greater than or equal to 14 mol % and less than or equal to 16.75 mol %, greater than or equal to 14.5 mol % and less than or equal to 17.5 mol %, greater than or equal to 14.5 mol % and less than or equal to 17.25 mol %, greater than or equal to 14.5 mol % and less than or equal to 17 mol %, greater than or equal to 14.5 mol % and less than or equal to 16.75 mol %, greater than or equal to 15 mol % and less than or equal to 17.5 mol %, greater than or equal to 15 mol % and less than or equal to 17.25 mol %, greater than or equal to 15 mol % and less than or equal to 17 mol %, greater than or equal to 15 mol % and less than or equal to 16.75 mol %, greater than or equal to 15.5 mol % and less than or equal to 17.5 mol %, greater than or equal to 15.5 mol % and less than or equal to 17.25 mol %, greater than or equal to 15.5 mol % and less than or equal to 17 mol %, greater than or equal to 15.5 mol % and less than or equal to 16.75 mol %, greater than or equal to 16 mol % and less than or equal to 17.5 mol %, greater than or equal to 16 mol % and less than or equal to 17.25 mol %, greater than or equal to 16 mol % and less than or equal to 17 mol %, or even greater than or equal to 16 mol % and less than or equal to 16.75 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the concentration of Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 10 mol % and less than or equal to 20 mol %, greater than or equal to 10 mol % and less than or equal to 19 mol %, greater than or equal to 10 mol % and less than or equal to 18 mol %, greater than or equal to 10 mol % and less than or equal to 17 mol %, greater than or equal to 10 mol % and less than or equal to 16 mol %, greater than or equal to 11 mol % and less than or equal to 20 mol %, greater than or equal to 11 mol % and less than or equal to 19 mol %, greater than or equal to 11 mol % and less than or equal to 18 mol %, greater than or equal to 11 mol % and less than or equal to 17 mol %, greater than or equal to 11 mol % and less than or equal to 16 mol %, greater than or equal to 12 mol % and less than or equal to 20 mol %, greater than or equal to 12 mol % and less than or equal to 19 mol %, greater than or equal to 12 mol % and less than or equal to 18 mol %, greater than or equal to 12 mol % and less than or equal to 17 mol %, greater than or equal to 12 mol % and less than or equal to 16 mol %, greater than or equal to 13 mol % and less than or equal to 20 mol %, greater than or equal to 13 mol % and less than or equal to 19 mol %, greater than or equal to 13 mol % and less than or equal to 18 mol %, greater than or equal to 13 mol % and less than or equal to 17 mol %, greater than or equal to 13 mol % and less than or equal to 16 mol %, greater than or equal to 14 mol % and less than or equal to 20 mol %, greater than or equal to 14 mol % and less than or equal to 19 mol %, greater than or equal to 14 mol % and less than or equal to 18 mol %, greater than or equal to 14 mol % and less than or equal to 17 mol %, greater than or equal to 14 mol % and less than or equal to 16 mol %, or any and all sub-ranges formed from any of these endpoints.

B₂O₃decreases the melting point of the glass composition, which may improve retention of certain colorants in the glass, such as, for example and without limitation, Au. Without wishing to be bound by theory, it is hypothesized that similar behavior may occur with colorants other than Au. B₂O₃may also improve the damage resistance of the resultant colored glass article. In addition, B₂O₃may be added to reduce the formation of non-bridging oxygen, the presence of which may reduce fracture toughness. The concentration of B₂O₃should be sufficiently high (e.g., greater than or equal to 1 mol %) to reduce the melting point of the glass composition, improve the formability, and increase the fracture toughness of the colored glass article. However, if B₂O₃is too high (e.g., greater than 15 mol %), the annealing point and strain point may decrease, which increases stress relaxation and reduces the overall strength of the colored glass article.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 1 mol % and less than or equal to 15 mol % B₂O₃, greater than or equal to 1 mol % and less than or equal to 10 mol % B₂O₃, greater than or equal to 3 mol % and less than or equal to 10 mol % B₂O₃, greater than or equal to 3.5 mol % and less than or equal to 9 mol % B₂O₃. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 2 mol % and less than or equal to 12 mol % B₂O₃or even greater than or equal to 2 mol % and less than or equal to 8 mol % B₂O₃. In embodiments, the concentration of B₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 1 mol %, greater than or equal to 2 mol %, greater than or equal to 3 mol %, greater than or equal to 3.5 mol %, greater than or equal to 4 mol %, greater than or equal to 4.5 mol %, greater than or equal to 5 mol %, or even greater than or equal to 5.5 mol %. In embodiments, the concentration of B₂O₃in the glass composition and the resultant colored glass article may be less than or equal to 15 mol %, less than or equal to 12 mol %, less than or equal to 10 mol %, less than or equal to 9 mol %, less than or equal to 8 mol %, less than or equal to 7.5 mol %, less than or equal to 7 mol %, less than or equal to 6.5 mol %, or even less than or equal to 6 mol %. In embodiments, the concentration of B₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 1 mol % and less than or equal to 15 mol %, greater than or equal to 1 mol % and less than or equal to 12 mol %, greater than or equal to 1 mol % and less than or equal to 10 mol %, greater than or equal to 1 mol % and less than or equal to 9 mol %, greater than or equal to 1 mol % and less than or equal to 8 mol %, greater than or equal to 1 mol % and less than or equal to 7.5 mol %, greater than or equal to 1 mol % and less than or equal to 7 mol %, greater than or equal to 1 mol % and less than or equal to 6.5 mol %, greater than or equal to 1 mol % and less than or equal to 6 mol %, greater than or equal to 2 mol % and less than or equal to 15 mol %, greater than or equal to 2 mol % and less than or equal to 12 mol %, greater than or equal to 2 mol % and less than or equal to 10 mol %, greater than or equal to 2 mol % and less than or equal to 9 mol %, greater than or equal to 2 mol % and less than or equal to 8 mol %, greater than or equal to 2 mol % and less than or equal to 7.5 mol %, greater than or equal to 2 mol % and less than or equal to 7 mol %, greater than or equal to 2 mol % and less than or equal to 6.5 mol %, greater than or equal to 2 mol % and less than or equal to 6 mol %, greater than or equal to 3 mol % and less than or equal to 15 mol %, greater than or equal to 3 mol % and less than or equal to 12 mol %, greater than or equal to 3 mol % and less than or equal to 10 mol %, greater than or equal to 3 mol % and less than or equal to 9 mol %, greater than or equal to 3 mol % and less than or equal to 8 mol %, greater than or equal to 3 mol % and less than or equal to 7.5 mol %, greater than or equal to 3 mol % and less than or equal to 7 mol %, greater than or equal to 3 mol % and less than or equal to 6.5 mol %, greater than or equal to 3 mol % and less than or equal to 6 mol %, greater than or equal to 3.5 mol % and less than or equal to 15 mol %, greater than or equal to 3.5 mol % and less than or equal to 12 mol %, greater than or equal to 3.5 mol % and less than or equal to 10 mol %, greater than or equal to 3.5 mol % and less than or equal to 9 mol %, greater than or equal to 3.5 mol % and less than or equal to 8 mol %, greater than or equal to 3.5 mol % and less than or equal to 7.5 mol %, greater than or equal to 3.5 mol % and less than or equal to 7 mol %, greater than or equal to 3.5 mol % and less than or equal to 6.5 mol %, greater than or equal to 3.5 mol % and less than or equal to 6 mol %, greater than or equal to 4 mol % and less than or equal to 15 mol %, greater than or equal to 4 mol % and less than or equal to 12 mol %, greater than or equal to 4 mol % and less than or equal to 10 mol %, greater than or equal to 4 mol % and less than or equal to 9 mol %, greater than or equal to 4 mol % and less than or equal to 8 mol %, greater than or equal to 4 mol % and less than or equal to 7.5 mol %, greater than or equal to 4 mol % and less than or equal to 7 mol %, greater than or equal to 4 mol % and less than or equal to 6.5 mol %, greater than or equal to 4 mol % and less than or equal to 6 mol %, greater than or equal to 4.5 mol % and less than or equal to 10 mol %, greater than or equal to 4.5 mol % and less than or equal to 9 mol %, greater than or equal to 4.5 mol % and less than or equal to 8 mol %, greater than or equal to 4.5 mol % and less than or equal to 7.5 mol %, greater than or equal to 4.5 mol % and less than or equal to 7 mol %, greater than or equal to 4.5 mol % and less than or equal to 6.5 mol %, greater than or equal to 5 mol % and less than or equal to 10 mol %, greater than or equal to 5 mol % and less than or equal to 9 mol %, greater than or equal to 5 mol % and less than or equal to 8 mol %, greater than or equal to 5 mol % and less than or equal to 7.5 mol %, greater than or equal to 5 mol % and less than or equal to 7 mol %, greater than or equal to 5 mol % and less than or equal to 6.5 mol %, greater than or equal to 5.5 mol % and less than or equal to 10 mol %, greater than or equal to 5.5 mol % and less than or equal to 9 mol %, greater than or equal to 5.5 mol % and less than or equal to 8 mol %, greater than or equal to 5.5 mol % and less than or equal to 7.5 mol %, greater than or equal to 5.5 mol % and less than or equal to 7 mol %, or even greater than or equal to 5.5 mol % and less than or equal to 6.5 mol %, or any and all sub-ranges formed from any of these endpoints.

As described hereinabove, the glass compositions and the resultant colored glass articles may contain alkali oxides, such as Li₂O, Na₂O, and K₂O, to enable the ion-exchangeability of the colored glass articles.

Li₂O aids in the ion-exchangeability of the colored glass article and also reduces the softening point of the glass composition, thereby increasing the formability of the colored glass articles. The addition of Li₂O facilitates the exchange of both Na⁺ and K⁺ cations into the glass for strengthening the glass and also facilitates producing a relatively high surface compressive stress and relatively deep depth of compression, improving the mechanical characteristics of the resultant colored glass article. In addition, Li₂O decreases the melting point of the glass composition, which may improve retention of colorants in the glass, such as, for example and without limitation, Au. Without wishing to be bound by theory, it is hypothesized that similar behavior may occur with colorants other than Au. The concentration of Li₂O in the glass compositions and resultant colored glass articles should be sufficiently high (e.g., greater than or equal to 1 mol %) to reduce the melting point of the glass composition and achieve the desired maximum central tension (e.g., greater than or equal to 40 MPa) following ion exchange. However, if the amount of Li₂O is too high (e.g., greater than 20 mol %), the liquidus temperature may increase, thereby diminishing the manufacturability of the colored glass article.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 1 mol % and less than or equal to 20 mol % Li₂O or even greater than or equal to 1 mol % and less than or equal to 20 mol % Li₂O. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 3 mol % and less than or equal to 18 mol % Li₂O, greater than or equal to 7 mol % and less than or equal to 18 mol % Li₂O, greater than or equal to 8.8 mol % and less than or equal to 14 mol % Li₂O, or even greater than or equal to 9 mol % and less than or equal to 13.5 mol % Li₂O. In embodiments, the concentration of Li₂O in the glass composition and the resultant colored glass article may be greater than or equal to 1 mol %, greater than or equal to 3 mol %, greater than or equal to 5 mol %, greater than or equal to 7 mol %, greater than or equal to 7.5 mol %, greater than or equal to 8 mol %, greater than or equal to 8.5 mol %, greater than or equal to 8.8 mol %, greater than or equal to 9 mol %, greater than or equal to 9.2 mol %, greater than or equal to 9.4 mol %, greater than or equal to 9.6 mol %, greater than or equal to 9.8 mol %, greater than or equal to 10 mol %, greater than or equal to 11 mol %, greater than or equal to 11.5 mol %, or even greater than or equal to 12 mol %. In embodiments, the concentration of Li₂O in the glass composition and the resultant colored glass article may be less than or equal to 20 mol %, less than or equal to 18 mol %, less than or equal to 17 mol %, less than or equal to 16 mol %, less than or equal to 15 mol %, less than or equal to 14 mol %, less than or equal to 13.5 mol %, less than or equal to 13 mol %, less than or equal to 12.5 mol %, less than or equal to 12 mol %, less than or equal to 11.5 mol %, or even less than or equal to 11 mol %. In embodiments, the concentration of Li₂O in the glass composition and the resultant colored glass article may be greater than or equal to 1 mol % and less than or equal to 20 mol %, greater than or equal to 1 mol % and less than or equal to 18 mol %, greater than or equal to 1 mol % and less than or equal to 16 mol %, greater than or equal to 1 mol % and less than or equal to 14 mol %, greater than or equal to 1 mol % and less than or equal to 12.5 mol %, greater than or equal to 1 mol % and less than or equal to 12 mol %, greater than or equal to 1 mol % and less than or equal 11.5 mol %, greater than or equal to 1 mol % and less than or equal to 11 mol %, greater than or equal to 3 mol % and less than or equal to 20 mol %, greater than or equal to 3 mol % and less than or equal to 18 mol %, greater than or equal to 3 mol % and less than or equal to 16 mol %, greater than or equal to 3 mol % and less than or equal to 14 mol %, greater than or equal to 3 mol % and less than or equal to 12.5 mol %, greater than or equal to 3 mol % and less than or equal to 12 mol %, greater than or equal to 3 mol % and less than or equal 11.5 mol %, greater than or equal to 3 mol % and less than or equal to 11 mol %, greater than or equal to 5 mol % and less than or equal to 20 mol %, greater than or equal to 5 mol % and less than or equal to 18 mol %, greater than or equal to 5 mol % and less than or equal to 16 mol %, greater than or equal to 5 mol % and less than or equal to 14 mol %, greater than or equal to 5 mol % and less than or equal to 12.5 mol %, greater than or equal to 5 mol % and less than or equal to 12 mol %, greater than or equal to 5 mol % and less than or equal 11.5 mol %, greater than or equal to 5 mol % and less than or equal to 11 mol %, greater than or equal to 7 mol % and less than or equal to 20 mol %, greater than or equal to 7 mol % and less than or equal to 18 mol %, greater than or equal to 7 mol % and less than or equal to 16 mol %, greater than or equal to 7 mol % and less than or equal to 15 mol %, greater than or equal to 7 mol % and less than or equal to 14 mol %, greater than or equal to 7 mol % and less than or equal to 13 mol %, greater than or equal to 7 mol % and less than or equal to 12.5 mol %, greater than or equal to 7 mol % and less than or equal to 12 mol %, greater than or equal to 7 mol % and less than or equal 11.5 mol %, greater than or equal to 7 mol % and less than or equal to 11 mol %, greater than or equal to 7.5 mol % and less than or equal to 20 mol %, greater than or equal to 7.5 mol % and less than or equal to 18 mol %, greater than or equal to 7.5 mol % and less than or equal to 16 mol %, greater than or equal to 7.5 mol % and less than or equal to 14 mol %, greater than or equal to 7.5 mol % and less than or equal to 12.5 mol %, greater than or equal to 7.5 mol % and less than or equal to 12 mol %, greater than or equal to 7.5 mol % and less than or equal 11.5 mol %, greater than or equal to 7.5 mol % and less than or equal to 11 mol %, greater than or equal to 8 mol % and less than or equal to 20 mol %, greater than or equal to 8 mol % and less than or equal to 18 mol %, greater than or equal to 8 mol % and less than or equal to 16 mol %, greater than or equal to 8 mol % and less than or equal to 15 mol %, greater than or equal to 8 mol % and less than or equal to 14 mol %, greater than or equal to 8 mol % and less than or equal to 13 mol %, greater than or equal to 8 mol % and less than or equal to 12.5 mol %, greater than or equal to 8 mol % and less than or equal to 12 mol %, greater than or equal to 8 mol % and less than or equal 11.5 mol %, greater than or equal to 8 mol % and less than or equal to 11 mol %, greater than or equal to 8.5 mol % and less than or equal to 20 mol %, greater than or equal to 8.5 mol % and less than or equal to 18 mol %, greater than or equal to 8.5 mol % and less than or equal to 16 mol %, greater than or equal to 8.5 mol % and less than or equal to 14 mol %, greater than or equal to 8.5 mol % and less than or equal to 12.5 mol %, greater than or equal to 8.5 mol % and less than or equal to 12 mol %, greater than or equal to 8.5 mol % and less than or equal 11.5 mol %, greater than or equal to 8.5 mol % and less than or equal to 11 mol %, greater than or equal to 9 mol % and less than or equal to 20 mol %, greater than or equal to 9 mol % and less than or equal to 18 mol %, greater than or equal to 9 mol % and less than or equal to 16 mol %, greater than or equal to 9 mol % and less than or equal to 15 mol %, greater than or equal to 9 mol % and less than or equal to 14 mol %, greater than or equal to 9 mol % and less than or equal to 13 mol %, greater than or equal to 9 mol % and less than or equal to 12.5 mol %, greater than or equal to 9 mol % and less than or equal to 12 mol %, greater than or equal to 9 mol % and less than or equal 11.5 mol %, or even greater than or equal to 9 mol % and less than or equal to 11 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the concentration of Li₂O in the glass composition and the resultant colored glass article may be greater than or equal to 8.8 mol % and less than or equal to 14 mol %, greater than or equal to 8.8 mol % and less than or equal to 13.5 mol %, greater than or equal to 8.8 mol % and less than or equal to 13 mol %, greater than or equal to 8.8 mol % and less than or equal to 12.5 mol %, greater than or equal to 8.8 mol % and less than or equal to 12 mol %, greater than or equal to 8.8 mol % and less than or equal to 11.5 mol %, greater than or equal to 9 mol % and less than or equal to 14 mol %, greater than or equal to 9 mol % and less than or equal to 13.5 mol %, greater than or equal to 9 mol % and less than or equal to 13 mol %, greater than or equal to 9 mol % and less than or equal to 12.5 mol %, greater than or equal to 9 mol % and less than or equal to 12 mol %, greater than or equal to 9 mol % and less than or equal to 11.5 mol %, greater than or equal to 9.2 mol % and less than or equal to 14 mol %, greater than or equal to 9.2 mol % and less than or equal to 13.5 mol %, greater than or equal to 9.2 mol % and less than or equal to 13 mol %, greater than or equal to 9.2 mol % and less than or equal to 12.5 mol %, greater than or equal to 9.2 mol % and less than or equal to 12 mol %, greater than or equal to 9.2 mol % and less than or equal to 11.5 mol %, greater than or equal to 9.4 mol % and less than or equal to 14 mol %, greater than or equal to 9.4 mol % and less than or equal to 13.5 mol %, greater than or equal to 9.4 mol % and less than or equal to 13 mol %, greater than or equal to 9.4 mol % and less than or equal to 12.5 mol %, greater than or equal to 9.4 mol % and less than or equal to 12 mol %, greater than or equal to 9.4 mol % and less than or equal to 11.5 mol %, greater than or equal to 9.6 mol % and less than or equal to 14 mol %, greater than or equal to 9.6 mol % and less than or equal to 13.5 mol %, greater than or equal to 9.6 mol % and less than or equal to 13 mol %, greater than or equal to 9.6 mol % and less than or equal to 12.5 mol %, greater than or equal to 9.6 mol % and less than or equal to 12 mol %, greater than or equal to 9.6 mol % and less than or equal to 11.5 mol %, greater than or equal to 9.8 mol % and less than or equal to 14 mol %, greater than or equal to 9.8 mol % and less than or equal to 13.5 mol %, greater than or equal to 9.8 mol % and less than or equal to 13 mol %, greater than or equal to 9.8 mol % and less than or equal to 12.5 mol %, greater than or equal to 9.8 mol % and less than or equal to 12 mol %, greater than or equal to 9.8 mol % and less than or equal to 11.5 mol %, greater than or equal to 10 mol % and less than or equal to 14 mol %, greater than or equal to 10 mol % and less than or equal to 13.5 mol %, greater than or equal to 10 mol % and less than or equal to 13 mol %, greater than or equal to 10 mol % and less than or equal to 12.5 mol %, greater than or equal to 10 mol % and less than or equal to 12 mol %, or even greater than or equal to 10 mol % and less than or equal to 11.5 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the concentration of Li₂O in the glass composition and the resultant colored glass article may be greater than or equal to 10 mol % and less than or equal to 17 mol %, greater than or equal to 10 mol % and less than or equal to 16 mol %, greater than or equal to 10 mol % and less than or equal to 15 mol %, greater than or equal to 10 mol % and less than or equal to 14 mol %, greater than or equal to 10 mol % and less than or equal to 13 mol %, greater than or equal to 10 mol % and less than or equal to 12 mol %, greater than or equal to 11 mol % and less than or equal to 17 mol %, greater than or equal to 11 mol % and less than or equal to 16 mol %, greater than or equal to 11 mol % and less than or equal to 15 mol %, greater than or equal to 11 mol % and less than or equal to 14 mol %, greater than or equal to 11 mol % and less than or equal to 13 mol %, greater than or equal to 11 mol % and less than or equal to 12 mol %, greater than or equal to 11.1 mol % and less than or equal to 17 mol %, greater than or equal to 11.1 mol % and less than or equal to 16 mol %, greater than or equal to 11.1 mol % and less than or equal to 15 mol %, greater than or equal to 11.1 mol % and less than or equal to 14 mol %, greater than or equal to 11.1 mol % and less than or equal to 13 mol %, greater than or equal to 11.1 mol % and less than or equal to 12 mol %, greater than or equal to 11.5 mol % and less than or equal to 17 mol %, greater than or equal to 11.5 mol % and less than or equal to 16 mol %, greater than or equal to 11.5 mol % and less than or equal to 15 mol %, greater than or equal to 11.5 mol % and less than or equal to 14 mol %, greater than or equal to 11.5 mol % and less than or equal to 13 mol %, greater than or equal to 11.5 mol % and less than or equal to 12 mol %, greater than or equal to 12 mol % and less than or equal to 17 mol %, greater than or equal to 12 mol % and less than or equal to 16 mol %, greater than or equal to 12 mol % and less than or equal to 15 mol %, greater than or equal to 12 mol % and less than or equal to 14 mol %, greater than or equal to 12 mol % and less than or equal to 13 mol %, greater than or equal to 13 mol % and less than or equal to 17 mol %, greater than or equal to 13 mol % and less than or equal to 16 mol %, greater than or equal to 13 mol % and less than or equal to 15 mol %, greater than or equal to 13 mol % and less than or equal to 14 mol %, or any and all sub-ranges formed from any of these endpoints.

Na₂O improves diffusivity of alkali ions in the glass and thereby reduces ion-exchange time and helps achieve the desired surface compressive stress (e.g., greater than or equal to 300 MPa). The addition of Na₂O also facilitates the exchange of K⁺ cations into the glass for strengthening and improving the mechanical characteristics of the resultant colored glass article. Na₂O also improves the formability of the colored glass article. In addition, Na₂O decreases the melting point of the glass composition, which may improve retention of certain colorants in the glass, such as, for example, Au. Without wishing to be bound by theory, it is hypothesized that similar behavior may occur with colorants other than Au. However, if too much Na₂O is added to the glass composition, the melting point may be too low. In embodiments, the concentration of Li₂O present in the glass composition and the resultant colored glass article may be greater than the concentration of Na₂O present in the glass composition and the resultant colored glass article.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than 0 mol. % or greater than or equal to 0.01 mol % and less than or equal to 15 mol % Na₂O, greater than or equal to 0.5 mol % and less than or equal to 15 mol % Na₂O or even greater than or equal to 1 mol % and less than or equal to 15 mol % Na₂O. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 1 mol % and less than or equal to 12 mol % Na₂O or even greater than or equal to 2 mol % and less than or equal to 10 mol % Na₂O. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.01 mol % and less than or equal to 4 mol % Na₂O. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 1.5 mol % and less than or equal to 8 mol % Na₂O or even greater than or equal to 2 mol % and less than or equal to 7.5 mol % Na₂O. In embodiments, the concentration of Na₂O in the glass composition and the resultant colored glass article may be greater than 0 mol %, greater than or equal to 0.01 mol %, greater than or equal to 0.5 mol %, greater than or equal to 1 mol %, greater than or equal to 1.5 mol %, greater than or equal to 2 mol %, greater than or equal to 2.5 mol %, greater than or equal to 3 mol %, greater than or equal to 3.5 mol %, greater than or equal to 4 mol %, or even greater than or equal to 4.5 mol %. In embodiments, the concentration of Na₂O in the glass composition and the resultant colored glass article may be less than or equal to 15 mol %, less than or equal to 12 mol %, less than or equal to 10 mol %, less than or equal to 9 mol %, less than or equal to 8.5 mol %, less than or equal to 8 mol %, less than or equal to 7.5 mol %, less than or equal to less than or equal to 7 mol %, less than or equal to 6.5 mol %, less than or equal to 6 mol %, less than or equal to less than or equal to 5.5 mol %, less than or equal to 5 mol %, less than or equal to 4.5 mol %, or even less than or equal to 4 mol %. In embodiments, the concentration of Na₂O in the glass composition and the resultant colored glass article may be greater than 0 mol % and less than or equal to 15 mol %, greater than 0 mol % and less than or equal to 12 mol %, greater than 0 mol % and less than or equal to 10 mol %, greater than 0 mol % and less than or equal to 8 mol %, greater than 0 mol % and less than or equal to 6 mol %, greater than 0 mol % and less than or equal to 5.5 mol %, greater than 0 mol % and less than or equal to 5 mol %, greater than 0 mol % and less than or equal to 4.5 mol %, greater than 0 mol % and less than or equal to 4 mol %, greater than or equal to 0.01 mol % and less than or equal to 15 mol %, greater than or equal to 0.01 mol % and less than or equal to 12 mol %, greater than or equal to 0.01 mol % and less than or equal to 10 mol %, greater than or equal to 0.01 mol % and less than or equal to 8 mol %, greater than or equal to 0.01 mol % and less than or equal to 6 mol %, greater than or equal to 0.01 mol % and less than or equal to 5.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 5 mol %, greater than or equal to 0.01 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 4 mol %, greater than or equal to 0.5 mol % and less than or equal to 15 mol %, greater than or equal to 0.5 mol % and less than or equal to 12 mol %, greater than or equal to 0.5 mol % and less than or equal to 10 mol %, greater than or equal to 0.5 mol % and less than or equal to 8 mol %, greater than or equal to 0.5 mol % and less than or equal to 6 mol %, greater than or equal to 1 mol % and less than or equal to 15 mol %, greater than or equal to 1 mol % and less than or equal to 12 mol %, greater than or equal to 1 and less than or equal to 10 mol %, greater than or equal to 1 and less than or equal to 9 mol %, greater than or equal to 1 mol % and less than or equal to 8 mol %, greater than or equal to 1 mol % and less than or equal to 7.5 mol %, greater than or equal to 1 mol % and less than or equal to 7 mol %, greater than or equal to 1 mol % and less than or equal to 6.5 mol %, greater than or equal to 1 mol % and less than or equal to 6 mol %, greater than or equal to 1 mol % and less than or equal to 5.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 15 mol %, greater than or equal to 1.5 mol % and less than or equal to 12 mol %, greater than or equal to 1.5 and less than or equal to 10 mol %, greater than or equal to 1.5 and less than or equal to 9 mol %, greater than or equal to 1.5 mol % and less than or equal to 8 mol %, greater than or equal to 1.5 mol % and less than or equal to 7.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 7 mol %, greater than or equal to 1.5 mol % and less than or equal to 6.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 6 mol %, greater than or equal to 1.5 mol % and less than or equal to 5.5 mol %, greater than or equal to 2 mol % and less than or equal to 15 mol %, greater than or equal to 2 mol % and less than or equal to 12 mol %, greater than or equal to 2 and less than or equal to 10 mol %, greater than or equal to 2 and less than or equal to 9 mol %, greater than or equal to 2 mol % and less than or equal to 8 mol %, greater than or equal to 2 mol % and less than or equal to 7.5 mol %, greater than or equal to 2 mol % and less than or equal to 7 mol %, greater than or equal to 2 mol % and less than or equal to 6.5 mol %, greater than or equal to 2 mol % and less than or equal to 6 mol %, greater than or equal to 2 mol % and less than or equal to 5.5 mol %, greater than or equal to 2.5 mol % and less than or equal to 15 mol %, greater than or equal to 2.5 mol % and less than or equal to 12 mol %, greater than or equal to 2.5 and less than or equal to 10 mol %, greater than or equal to 2.5 and less than or equal to 9 mol %, greater than or equal to 2.5 mol % and less than or equal to 8 mol %, greater than or equal to 2.5 mol % and less than or equal to 7.5 mol %, greater than or equal to 2.5 mol % and less than or equal to 7 mol %, greater than or equal to 2.5 mol % and less than or equal to 6.5 mol %, greater than or equal to 2.5 mol % and less than or equal to 6 mol %, greater than or equal to 2.5 mol % and less than or equal to 5.5 mol %, greater than or equal to 3 mol % and less than or equal to 15 mol %, greater than or equal to 3 mol % and less than or equal to 12 mol %, greater than or equal to 3 and less than or equal to 10 mol %, greater than or equal to 3 and less than or equal to 9 mol %, greater than or equal to 3 and less than or equal to 8.5 mol %, greater than or equal to 3 mol % and less than or equal to 8 mol %, greater than or equal to 3 mol % and less than or equal to 7.5 mol %, greater than or equal to 3 mol % and less than or equal to 7 mol %, greater than or equal to 3 mol % and less than or equal to 6.5 mol %, greater than or equal to 3 mol % and less than or equal to 6 mol %, greater than or equal to 3 mol % and less than or equal to 5.5 mol %, greater than or equal to 3.5 mol % and less than or equal to 15 mol %, greater than or equal to 3.5 mol % and less than or equal to 12 mol %, greater than or equal to 3.5 and less than or equal to 10 mol %, greater than or equal to 3.5 and less than or equal to 9 mol %, greater than or equal to 3.5 mol % and less than or equal to 8 mol %, greater than or equal to 3.5 mol % and less than or equal to 7.5 mol %, greater than or equal to 3.5 mol % and less than or equal to 7 mol %, greater than or equal to 3.5 mol % and less than or equal to 6.5 mol %, greater than or equal to 3.5 mol % and less than or equal to 6 mol %, greater than or equal to 3.5 mol % and less than or equal to 5.5 mol %, greater than or equal to 4 mol % and less than or equal to 15 mol %, greater than or equal to 4 mol % and less than or equal to 12 mol %, greater than or equal to 4 and less than or equal to 10 mol %, greater than or equal to 4 and less than or equal to 9 mol %, greater than or equal to 4 mol % and less than or equal to 8 mol %, greater than or equal to 4 mol % and less than or equal to 7.5 mol %, greater than or equal to 4 mol % and less than or equal to 7 mol %, greater than or equal to 4 mol % and less than or equal to 6.5 mol %, greater than or equal to 4 mol % and less than or equal to 6 mol %, greater than or equal to 4 mol % and less than or equal to 5.5 mol %, greater than or equal to 4.5 mol % and less than or equal to 15 mol %, greater than or equal to 4.5 mol % and less than or equal to 12 mol %, greater than or equal to 4.5 and less than or equal to 10 mol %, greater than or equal to 4.5 mol % and less than or equal to 8 mol %, greater than or equal to 4.5 mol % and less than or equal to 7.5 mol %, greater than or equal to 4.5 mol % and less than or equal to 7 mol %, greater than or equal to 4.5 mol % and less than or equal to 6.5 mol %, greater than or equal to 4.5 mol % and less than or equal to 6 mol %, or even greater than or equal to 4.5 mol % and less than or equal to 5.5 mol %, or any and all sub-ranges formed from any of these endpoints.

K₂O, when included, promotes ion-exchange and may increase the depth of compression and decrease the melting point to improve the formability of the colored glass article. However, adding too much K₂O may cause the surface compressive stress and melting point to be too low. Accordingly, in embodiments, the amount of K₂O added to the glass composition may be limited.

In embodiments, the glass composition and the resultant colored glass article may optionally comprise greater than or equal to 0 mol % and less than or equal to 3 mol % K₂O, greater than or equal to 0 mol % and less than or equal to 1 mol % K₂O, greater than or equal to 0.01 mol % and less than or equal to 1 mol % K₂O or even greater than or equal to 0.1 mol % and less than or equal to 1 mol % K₂O. In embodiments, the glass composition and the resultant colored glass article may optionally comprise greater than 0.1 mol % and less than or equal to 0.5 mol % K₂O. In embodiments, the concentration of K₂O in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol %, greater than or equal to 0.01 mol %, greater than or equal to 0.1 mol %, greater than or equal to 0.2 mol %, greater than or equal to 0.25 mol %, greater than or equal to 0.4 mol %, or even greater than or equal to 0.5 mol %. In embodiments, the concentration of K₂O in the glass composition and the resultant colored glass article may be less than or equal to 3 mol %, less than or equal to 2.5 mol %, less than or equal to 2 mol %, less than or equal to 1.5 mol %, less than or equal to 1 mol %, less than or equal to 0.75 mol %, less than or equal to 0.5 mol %, or even less than or equal to 0.25 mol %. In embodiments, the concentration of K₂O in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 3 mol %, greater than or equal to 0 mol % and less than or equal to 2.5 mol %, greater than or equal to 0 mol % and less than or equal to 2 mol %, greater than or equal to 0 mol % and less than or equal to 1.5 mol %, greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0 mol % and less than or equal to 0.75 mol %, greater than or equal to 0 mol % and less than or equal to 0.7 mol %, greater than or equal to 0 mol % and less than or equal to 0.5 mol %, greater than or equal to 0 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.01 mol % and less than or equal to 3 mol %, greater than or equal to 0.01 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 2 mol %, greater than or equal to 0.01 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 1 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.7 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 3 mol %, greater than or equal to 0.1 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 2 mol %, greater than or equal to 0.1 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 1 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.7 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.2 mol % and less than or equal to 3 mol %, greater than or equal to 0.2 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.2 mol % and less than or equal to 2 mol %, greater than or equal to 0.2 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.2 mol % and less than or equal to 1 mol %, greater than or equal to 0.2 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.2 mol % and less than or equal to 0.7 mol %, greater than or equal to 0.2 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.25 mol % and less than or equal to 3 mol %, greater than or equal to 0.25 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.25 mol % and less than or equal to 2 mol %, greater than or equal to 0.25 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.25 mol % and less than or equal to 1 mol %, greater than or equal to 0.25 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.25 mol % and less than or equal to 0.7 mol %, greater than or equal to 0.25 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.3 mol % and less than or equal to 3 mol %, greater than or equal to 0.3 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.3 mol % and less than or equal to 2 mol %, greater than or equal to 0.3 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.3 mol % and less than or equal to 1 mol %, greater than or equal to 0.3 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.3 mol % and less than or equal to 0.7 mol %, greater than or equal to 0.3 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.4 mol % and less than or equal to 3 mol %, greater than or equal to 0.4 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.4 mol % and less than or equal to 2 mol %, greater than or equal to 0.4 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.4 mol % and less than or equal to 1 mol %, greater than or equal to 0.4 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.4 mol % and less than or equal to 0.7 mol %, or even greater than or equal to 0.4 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 1 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant colored glass article may be substantially free or free of K₂O.

R₂O, as used herein, is the sum (in mol %) of Li₂O, Na₂O, and K₂O present in the glass composition and the resultant colored glass article (i.e., R₂O=Li₂O (mol %)+Na₂O (mol %)+K₂O (mol %). Like B₂O₃, the alkali oxides aid in decreasing the softening point and molding temperature of the glass composition, thereby offsetting the increase in the softening point and molding temperature of the glass composition due to higher amounts of SiO₂in the glass composition, for example. The softening point and molding temperature may be further reduced by including combinations of alkali oxides (e.g., two or more alkali oxides) in the glass composition, a phenomenon referred to as the “mixed alkali effect.” However, it has been found that if the amount of alkali oxide is too high, the average coefficient of thermal expansion of the glass composition increases to greater than 100×10⁻⁷/° C., which may be undesirable.

In embodiments, the concentration of R₂O in the glass composition and the resultant colored glass article may be greater than or equal to 1 mol % and less than or equal to 35 mol %. In embodiments, the concentration of R₂O in the glass composition and the resultant colored glass article may be greater than or equal to 6 mol % and less than or equal to 25 mol % or even greater than or equal to 8 mol % and less than or equal to 23 mol %. In embodiments, the concentration of R₂O in the glass composition and the resultant colored glass article may be greater than or equal to 2 mol %, greater than or equal to 4 mol %, greater than 6 mol %, greater than or equal to 8 mol %, greater than or equal to 10 mol %, greater than or equal to 10.3 mol %, greater than or equal to 11 mol %, greater than or equal to 12 mol %, greater than or equal to 13 mol %, greater than or equal to 12 mol %, or even greater than or equal to 14 mol %. In embodiments, the concentration of R₂O in the glass composition and the resultant colored glass article may be less than or equal to 35 mol %, less than or equal to 30 mol %, less than or equal to 25 mol %, less than or equal to 23 mol %, less than or equal to 22 mol %, less than or equal to 21 mol %, less than or equal to 20 mol %, less than or equal to 19 mol %, less than or equal to 18 mol %, less than or equal to 17 mol %, or even less than or equal to 16 mol %. In embodiments, the concentration of R₂O in the glass composition and the resultant colored glass article may be greater than or equal to 1 mol % and less than or equal to 35 mol %, greater than or equal to 1 mol % and less than or equal to 30 mol %, greater than or equal to 1 mol % and less than or equal to 25 mol %, greater than or equal to 1 mol % and less than or equal to 23 mol %, greater than or equal to 1 mol % and less than or equal to 22 mol %, greater than or equal to 1 mol % and less than or equal to 21 mol %, greater than or equal to 1 mol % and less than or equal to 20 mol %, greater than or equal to 1 mol % and less than or equal to 19 mol %, greater than or equal to 1 mol % and less than or equal to 18 mol %, greater than or equal to 1 mol % and less than or equal to 17 mol %, greater than or equal to 1 mol % and less than or equal to 16 mol %, greater than or equal to 2 mol % and less than or equal to 35 mol %, greater than or equal to 2 mol % and less than or equal to 30 mol %, greater than or equal to 2 mol % and less than or equal to 25 mol %, greater than or equal to 2 mol % and less than or equal to 23 mol %, greater than or equal to 2 mol % and less than or equal to 22 mol %, greater than or equal to 2 mol % and less than or equal to 21 mol %, greater than or equal to 2 mol % and less than or equal to 20 mol %, greater than or equal to 2 mol % and less than or equal to 19 mol %, greater than or equal to 2 mol % and less than or equal to 18 mol %, greater than or equal to 2 mol % and less than or equal to 17 mol %, greater than or equal to 2 mol % and less than or equal to 16 mol %, greater than or equal to 4 mol % and less than or equal to 35 mol %, greater than or equal to 4 mol % and less than or equal to 30 mol %, greater than or equal to 4 mol % and less than or equal to 25 mol %, greater than or equal to 4 mol % and less than or equal to 23 mol %, greater than or equal to 4 mol % and less than or equal to 22 mol %, greater than or equal to 4 mol % and less than or equal to 21 mol %, greater than or equal to 4 mol % and less than or equal to 20 mol %, greater than or equal to 4 mol % and less than or equal to 19 mol %, greater than or equal to 4 mol % and less than or equal to 18 mol %, greater than or equal to 4 mol % and less than or equal to 17 mol %, greater than or equal to 4 mol % and less than or equal to 16 mol %, greater than or equal to 6 mol % and less than or equal to 35 mol %, greater than or equal to 6 mol % and less than or equal to 30 mol %, greater than or equal to 6 mol % and less than or equal to 25 mol %, greater than or equal to 6 mol % and less than or equal to 23 mol %, greater than or equal to 6 mol % and less than or equal to 22 mol %, greater than or equal to 6 mol % and less than or equal to 21 mol %, greater than or equal to 6 mol % and less than or equal to 20 mol %, greater than or equal to 6 mol % and less than or equal to 19 mol %, greater than or equal to 6 mol % and less than or equal to 18 mol %, greater than or equal to 6 mol % and less than or equal to 17 mol %, greater than or equal to 6 mol % and less than or equal to 16 mol %, greater than or equal to 8 mol % and less than or equal to 35 mol %, greater than or equal to 8 mol % and less than or equal to 30 mol %, greater than or equal to 8 mol % and less than or equal to 25 mol %, greater than or equal to 8 mol % and less than or equal to 23 mol %, greater than or equal to 8 mol % and less than or equal to 22 mol %, greater than or equal to 8 mol % and less than or equal to 21 mol %, greater than or equal to 8 mol % and less than or equal to 20 mol %, greater than or equal to 8 mol % and less than or equal to 19 mol %, greater than or equal to 8 mol % and less than or equal to 18 mol %, greater than or equal to 8 mol % and less than or equal to 17 mol %, greater than or equal to 8 mol % and less than or equal to 16 mol %, greater than or equal to 10 mol % and less than or equal to 35 mol %, greater than or equal to 10 mol % and less than or equal to 30 mol %, greater than or equal to 10 mol % and less than or equal to 25 mol %, greater than or equal to 10 mol % and less than or equal to 23 mol %, greater than or equal to 10 mol % and less than or equal to 22 mol %, greater than or equal to 10 mol % and less than or equal to 21 mol %, greater than or equal to 10 mol % and less than or equal to 20 mol %, greater than or equal to 10 mol % and less than or equal to 19 mol %, greater than or equal to 10 mol % and less than or equal to 18 mol %, greater than or equal to 10 mol % and less than or equal to 17 mol %, greater than or equal to 10 mol % and less than or equal to 16 mol %, greater than or equal to 11 mol % and less than or equal to 35 mol %, greater than or equal to 11 mol % and less than or equal to 30 mol %, greater than or equal to 11 mol % and less than or equal to 25 mol %, greater than or equal to 11 mol % and less than or equal to 23 mol %, greater than or equal to 11 mol % and less than or equal to 22 mol %, greater than or equal to 11 mol % and less than or equal to 21 mol %, greater than or equal to 11 mol % and less than or equal to 20 mol %, greater than or equal to 11 mol % and less than or equal to 19 mol %, greater than or equal to 11 mol % and less than or equal to 18 mol %, greater than or equal to 11 mol % and less than or equal to 17 mol %, greater than or equal to 11 mol % and less than or equal to 16 mol %, greater than or equal to 12 mol % and less than or equal to 35 mol %, greater than or equal to 12 mol % and less than or equal to 30 mol %, greater than or equal to 12 mol % and less than or equal to 25 mol %, greater than or equal to 12 mol % and less than or equal to 23 mol %, greater than or equal to 12 mol % and less than or equal to 22 mol %, greater than or equal to 12 mol % and less than or equal to 21 mol %, greater than or equal to 12 mol % and less than or equal to 20 mol %, greater than or equal to 12 mol % and less than or equal to 19 mol %, greater than or equal to 12 mol % and less than or equal to 18 mol %, greater than or equal to 12 mol % and less than or equal to 17 mol %, greater than or equal to 12 mol % and less than or equal to 16 mol %, greater than or equal to 13 mol % and less than or equal to 35 mol %, greater than or equal to 13 mol % and less than or equal to 30 mol %, greater than or equal to 13 mol % and less than or equal to 25 mol %, greater than or equal to 13 mol % and less than or equal to 23 mol %, greater than or equal to 13 mol % and less than or equal to 22 mol %, greater than or equal to 13 mol % and less than or equal to 21 mol %, greater than or equal to 13 mol % and less than or equal to 20 mol %, greater than or equal to 13 mol % and less than or equal to 19 mol %, greater than or equal to 13 mol % and less than or equal to 18 mol %, greater than or equal to 13 mol % and less than or equal to 17 mol %, greater than or equal to 13 mol % and less than or equal to 16 mol %, greater than or equal to 14 mol % and less than or equal to 35 mol %, greater than or equal to 14 mol % and less than or equal to 30 mol %, greater than or equal to 14 mol % and less than or equal to 25 mol %, greater than or equal to 14 mol % and less than or equal to 23 mol %, greater than or equal to 14 mol % and less than or equal to 22 mol %, greater than or equal to 14 mol % and less than or equal to 21 mol %, greater than or equal to 14 mol % and less than or equal to 20 mol %, greater than or equal to 14 mol % and less than or equal to 19 mol %, greater than or equal to 14 mol % and less than or equal to 18 mol %, greater than or equal to 14 mol % and less than or equal to 17 mol %, or even greater than or equal to 14 mol % and less than or equal to 16 mol %, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the difference between R₂O and Al₂O₃(i.e. R₂O (mol %)-Al₂O₃(mol %)) in the glass composition may be adjusted to produce a desired observable color (e.g., pink, purple, red, orange, or blue). The analyzed R₂O—Al₂O₃of the resultant colored glass article, along with the added colorant package, may correlate with the observable color of the colored glass article after heat treatment, as discussed herein. In embodiments, R₂O—Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to −5 mol % and less than or equal to 7 mol % or even greater than or equal to −3 mol % and less than or equal to 2 mol %. In embodiments, R₂O—Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to −3 mol % and less than or equal to 6 mol %. In embodiments, R₂O—Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to −1 mol % and less than or equal to 5 mol %. In embodiments, R₂O—Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to −5 mol % and less than or equal to 1.5 mol %. In embodiments, R₂O—Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to −3 mol % and less than or equal to 1.5 mol %. In embodiments, R₂O—Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 1.5 mol % and less than or equal to 7 mol %. In embodiments, R₂O—Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 1.5 mol % and less than or equal to 5 mol %. In embodiments, R₂O—Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to −5 mol %, greater than or equal to −4 mol %, greater than or equal to −3 mol %, greater than or equal to −2.5 mol %, greater than or equal to −2 mol %, greater than or equal to −1.5 mol %, greater than or equal to 0.2 mol %, greater than or equal to 0.5 mol %, greater than or equal to 1 mol %, greater than or equal to 1.5 mol %, or even greater than or equal to 2 mol %. In embodiments, R₂O—Al₂O₃in the glass composition and the resultant colored glass article may be less than or equal to 7 mol %, less than or equal to 6.5 mol %, less than or equal to 6 mol %, less than or equal to 5.5 mol %, less than or equal to 5 mol %, less than or equal to 4.5 mol %, less than or equal to 4 mol %, less than or equal to 3.5 mol %, less than or equal to 3 mol %, less than or equal to 2.5 mol %, less than or equal to 2 mol %, less than or equal to 1.5 mol %, less than or equal to 1 mol %, or even less than or equal to 0.5 mol %. In embodiments, R₂O—Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to −5 mol % and less than or equal to 7 mol %, greater than or equal to −5 mol % and less than or equal to 5 mol %, greater than or equal to −5 mol % and less than or equal to 3 mol %, greater than or equal to −5 mol % and less than or equal to 1.5 mol %, greater than or equal to −3 mol % and less than or equal to 7 mol %, greater than or equal to −3 mol % and less than or equal to 5 mol %, greater than or equal to −3 mol % and less than or equal to 3 mol %, greater than or equal to −3 mol % and less than or equal to 1.5 mol %, greater than or equal to −1 mol % and less than or equal to 7 mol %, greater than or equal to −1 mol % and less than or equal to 5 mol %, greater than or equal to −1 mol % and less than or equal to 3 mol %, greater than or equal to −1 mol % and less than or equal to 1.5 mol %, greater than or equal to 0 mol % and less than or equal to 7 mol %, greater than or equal to 0 mol % and less than or equal to 5 mol %, greater than or equal to 0 mol % and less than or equal to 3 mol %, greater than or equal to 0 mol % and less than or equal to 1.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 7 mol %, greater than or equal to 1.5 mol % and less than or equal to 5 mol %, or even greater than or equal to 1.5 mol % and less than or equal to 3 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, R₂O—Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to −3 mol % and less than or equal to 2 mol %, greater than or equal to −3 mol % and less than or equal to 1.5 mol %, greater than or equal to −3 mol % and less than or equal to 1 mol %, greater than or equal to −3 mol % and less than or equal to 0.5 mol %, greater than or equal to −2.5 mol % and less than or equal to 2 mol %, greater than or equal to −2.5 mol % and less than or equal to 1.5 mol %, greater than or equal to −2.5 mol % and less than or equal to 1 mol %, greater than or equal to −2.5 mol % and less than or equal to 0.5 mol %, greater than or equal to −2 mol % and less than or equal to 2 mol %, greater than or equal to −2 mol % and less than or equal to 1.5 mol %, greater than or equal to −2 mol % and less than or equal to 1 mol %, greater than or equal to −2 mol % and less than or equal to 0.5 mol %, greater than or equal to −1.5 mol % and less than or equal to 2 mol %, greater than or equal to −1.5 mol % and less than or equal to 1.5 mol %, greater than or equal to −1.5 mol % and less than or equal to 1 mol %, or even greater than or equal to −1.5 mol % and less than or equal to 0.5 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the difference between the concentrations of R₂O and Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 0.2 mol % and less than or equal to 5 mol %, greater than or equal to 0.2 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.2 mol % and less than or equal to 4 mol %, greater than or equal to 0.2 mol % and less than or equal to 3.5 mol %, greater than or equal to 0.2 mol % and less than or equal to 3 mol %, greater than or equal to 0.5 mol % and less than or equal to 5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4 mol %, greater than or equal to 0.5 mol % and less than or equal to 3.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 3 mol %, greater than or equal to 1 mol % and less than or equal to 5 mol %, greater than or equal to 1 mol % and less than or equal to 4.5 mol %, greater than or equal to 1 mol % and less than or equal to 4 mol %, greater than or equal to 1 mol % and less than or equal to 3.5 mol %, greater than or equal to 1 mol % and less than or equal to 3 mol %, greater than or equal to 1.5 mol % and less than or equal to 5 mol %, greater than or equal to 1.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 4 mol %, greater than or equal to 1.5 mol % and less than or equal to 3.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 3 mol %, greater than or equal to 2 mol % and less than or equal to 5 mol %, greater than or equal to 2 mol % and less than or equal to 4.5 mol %, greater than or equal to 2 mol % and less than or equal to 4 mol %, greater than or equal to 2 mol % and less than or equal to 3.5 mol %, greater than or equal to 2 mol % and less than or equal to 3 mol %, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the glass compositions and the resultant colored glass articles described herein further include MgO and/or ZnO to improve retention of colorants in the glass, such as Au or the like, by lowering the melting point of the glass composition. Decreasing the melting point of the glass composition may help improve colorant retention because the glass compositions may be melted at relatively lower temperatures and the evaporation of colorants from the glass, such as gold, may be reduced. While not wishing to be bound by theory, it is also believed that partially replacing Li₂O and/or Na₂O with MgO and/or ZnO may also help improve retention of the colorants. Specifically, Li₂O and/or Na₂O is included in the batch glass composition as lithium carbonate and sodium carbonate, respectively. Upon melting the glass composition, carbonate gas is released from the glass composition. Colorants such as Au escape from the glass composition within the carbonate gas. Therefore, the improved colorant retention may be due to the reduced amount of carbonate. Further, it is believed that MgO and/or ZnO may improve the solubility of some colorants in the glass (such as Cr₂O₃, for example), thereby avoiding the formation of undesirable crystal phases (such as Cr-spinel crystals) and expanding the color gamut that may be achieved by the resultant colored glass articles. For example, in embodiments where the colorant includes Cr₂O₃, the sum of MgO and ZnO present in the glass composition and the resultant colored glass article (i.e., MgO (mol %)+ZnO (mol %)) may be greater than or equal to 0 mol % and less than or equal to 6 mol % or even less than or equal to 4.5 mol %. Without wishing to be bound by theory, it is hypothesized that similar behavior may occur with colorants other than Au and Cr₂O₃.

In embodiments, the sum (in mol %) of MgO and ZnO present in the glass composition and the resultant colored glass article (i.e., MgO (mol %)+ZnO (mol %)) may be greater than or equal to 0 mol % and less than or equal to 8 mol %, greater than or equal to 0.1 mol % and less than or equal to 8 mol %, greater than or equal to 0 mol % and less than or equal to 6 mol %, greater than or equal to 0.1 mol % and less than or equal to 6 mol %, or even greater than or equal to 0 mol % and less than or equal to 4.5 mol %. In embodiments, the sum of MgO and ZnO in the glass composition and the resultant colored glass article may be greater than or equal to 0.5 mol % and less than or equal to 5.5 mol %. In embodiments, the sum of MgO and ZnO in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol %, greater than or equal to 0.01 mol %, greater than or equal to 0.1 mol %, greater than or equal to 0.5 mol %, greater than or equal to 1 mol %, greater than or equal to 1.5 mol %, greater than or equal to 2 mol %, greater than or equal to 2.5 mol %, greater than or equal to 3 mol %, or even greater than or equal to 3.5 mol %. In embodiments, the sum of MgO and ZnO in the glass composition and the resultant colored glass article may be less than or equal to 8 mol %, less than or equal to 7 mol %, less than or equal to 6 mol %, less than or equal to 5.5 mol %, less than or equal to 5 mol %, less than or equal to 4.5 mol %, less than or equal to 4.25 mol %, or even less than or equal to 4 mol %. In embodiments, the sum of MgO and ZnO in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 8 mol %, greater than or equal to 0 mol % and less than or equal to 7 mol %, greater than or equal to 0 mol % and less than or equal to 6 mol %, greater than or equal to 0 mol % and less than or equal to 5.5 mol %, greater than or equal to 0 mol % and less than or equal to 5 mol %, greater than or equal to 0 mol % and less than or equal to 4.5 mol %, greater than or equal to 0 mol % and less than or equal to 4.25 mol %, greater than or equal to 0 mol % and less than or equal to 4 mol %, greater than or equal to 0.1 mol % and less than or equal to 8 mol %, greater than or equal to 0.1 mol % and less than or equal to 7 mol %, greater than or equal to 0.1 mol % and less than or equal to 6 mol %, greater than or equal to 0.1 mol % and less than or equal to 5.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 5 mol %, greater than or equal to 0.1 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 4.25 mol %, greater than or equal to 0.1 mol % and less than or equal to 4 mol %, greater than or equal to 0.5 mol % and less than or equal to 8 mol %, greater than or equal to 0.5 mol % and less than or equal to 7 mol %, greater than or equal to 0.5 mol % and less than or equal to 6 mol %, greater than or equal to 0.5 mol % and less than or equal to 5.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4.25 mol %, greater than or equal to 0.5 mol % and less than or equal to 4 mol %, greater than or equal to 1 mol % and less than or equal to 8 mol %, greater than or equal to 1 mol % and less than or equal to 7 mol %, greater than or equal to 1 mol % and less than or equal to 6 mol %, greater than or equal to 1 mol % and less than or equal to 5.5 mol %, greater than or equal to 1 mol % and less than or equal to 5 mol %, greater than or equal to 1 mol % and less than or equal to 4.5 mol %, greater than or equal to 1 mol % and less than or equal to 4.25 mol %, greater than or equal to 1 mol % and less than or equal to 4 mol %, greater than or equal to 1.5 mol % and less than or equal to 8 mol %, greater than or equal to 1.5 mol % and less than or equal to 7 mol %, greater than or equal to 1.5 mol % and less than or equal to 6 mol %, greater than or equal to 1.5 mol % and less than or equal to 5.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 5 mol %, greater than or equal to 1.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 4.25 mol %, greater than or equal to 1.5 mol % and less than or equal to 4 mol %, greater than or equal to 2 mol % and less than or equal to 8 mol %, greater than or equal to 2 mol % and less than or equal to 7 mol %, greater than or equal to 2 mol % and less than or equal to 6 mol %, greater than or equal to 2 mol % and less than or equal to 5.5 mol %, greater than or equal to 2 mol % and less than or equal to 5 mol %, greater than or equal to 2 mol % and less than or equal to 4.5 mol %, greater than or equal to 2 mol % and less than or equal to 4.25 mol %, greater than or equal to 2 mol % and less than or equal to 4 mol %, greater than or equal to 2.5 mol % and less than or equal to 8 mol %, greater than or equal to 2.5 mol % and less than or equal to 7 mol %, greater than or equal to 2.5 mol % and less than or equal to 6 mol %, greater than or equal to 2.5 mol % and less than or equal to 5.5 mol %, greater than or equal to 2.5 mol % and less than or equal to 5 mol %, greater than or equal to 2.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 2.5 mol % and less than or equal to 4.25 mol %, greater than or equal to 2.5 mol % and less than or equal to 4 mol %, greater than or equal to 3 mol % and less than or equal to 8 mol %, greater than or equal to 3 mol % and less than or equal to 7 mol %, greater than or equal to 3 mol % and less than or equal to 6 mol %, greater than or equal to 3 mol % and less than or equal to 5.5 mol %, greater than or equal to 3 mol % and less than or equal to 5 mol %, greater than or equal to 3 mol % and less than or equal to 4.5 mol %, greater than or equal to 3 mol % and less than or equal to 4.25 mol %, greater than or equal to 3 mol % and less than or equal to 4 mol %, greater than or equal to 3 mol % and less than or equal to 8 mol %, greater than or equal to 3 mol % and less than or equal to 7 mol %, greater than or equal to 3.5 mol % and less than or equal to 6 mol %, greater than or equal to 3.5 mol % and less than or equal to 5.5 mol %, greater than or equal to 3.5 mol % and less than or equal to 5 mol %, or even greater than or equal to 3.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 3.5 mol % and less than or equal to 4.25 mol %, greater than or equal to 3.5 mol % and less than or equal to 4 mol %, or any and all sub-ranges formed from any of these endpoints.

In addition to improving colorant retention, MgO lowers the viscosity of the glass compositions, which enhances the formability, the strain point, and the Young's modulus, and may improve ion-exchangeability. However, when too much MgO is added to the glass composition, the diffusivity of sodium and potassium ions in the glass composition decreases which, in turn, adversely impacts the ion-exchange performance (i.e., the ability to ion-exchange) of the resultant colored glass article.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0 mol % and less than or equal to 8 mol % MgO or even greater than or equal to 0 mol % and less than or equal to 4.5 mol % MgO. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.5 mol % and less than or equal to 7 mol % MgO. In embodiments, the concentration of MgO in the glass composition may be greater than or equal to 0 mol %, greater than or equal to 0.5 mol %, greater than or equal to 1 mol %, greater than or equal to 1.5 mol %, greater than or equal to 2 mol %, or even greater than or equal to 2.5 mol %. In embodiments, the concentration of MgO in the glass composition may be less than or equal to 8 mol %, less than or equal to 7 mol %, less than or equal to 6 mol %, less than or equal to 5.5 mol %, less than or equal to 5 mol %, less than or equal to 4.5 mol %, less than or equal to 4 mol %, less than or equal to 3.5 mol %, less than or equal to 3 mol %, less than or equal to 2.5 mol %, less than or equal to 2 mol %, less than or equal to 1.5 mol %, or even less than or equal to 1 mol %. In embodiments, the concentration of MgO in the glass composition may be greater than or equal to 0 mol % and less than or equal to 8 mol %, greater than or equal to 0 mol % and less than or equal to 7 mol %, greater than or equal to 0 mol % and less than or equal to 6 mol %, greater than or equal to 0 mol % and less than or equal to 5.5 mol %, greater than or equal to 0 mol % and less than or equal to 5 mol %, greater than or equal to 0 mol % and less than or equal to 4.5 mol %, greater than or equal to 0 mol % and less than or equal to 4 mol %, greater than or equal to 0 mol % and less than or equal to 3.5 mol %, greater than or equal to 0 mol % and less than or equal to 3 mol %, greater than or equal to 0 mol % and less than or equal to 2.5 mol %, greater than or equal to 0 mol % and less than or equal to 2 mol %, greater than or equal to 0 mol % and less than or equal to 1.5 mol %, greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 8 mol %, greater than or equal to 0.5 mol % and less than or equal to 7 mol %, greater than or equal to 0.5 mol % and less than or equal to 6 mol %, greater than or equal to 0.5 mol % and less than or equal to 5.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4 mol %, greater than or equal to 0.5 mol % and less than or equal to 3.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 3 mol %, greater than or equal to 0.5 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 2 mol %, greater than or equal to 0.5 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 1 mol %, greater than or equal to 1 mol % and less than or equal to 8 mol %, greater than or equal to 1 mol % and less than or equal to 7 mol %, greater than or equal to 1 mol % and less than or equal to 6 mol %, greater than or equal to 1 mol % and less than or equal to 5.5 mol %, greater than or equal to 1 mol % and less than or equal to 5 mol %, greater than or equal to 1 mol % and less than or equal to 4.5 mol %, greater than or equal to 1 mol % and less than or equal to 4 mol %, greater than or equal to 1 mol % and less than or equal to 3.5 mol %, greater than or equal to 1 mol % and less than or equal to 3 mol %, greater than or equal to 1 mol % and less than or equal to 2.5 mol %, greater than or equal to 1 mol % and less than or equal to 2 mol %, greater than or equal to 1 mol % and less than or equal to 1.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 8 mol %, greater than or equal to 1.5 mol % and less than or equal to 7 mol %, greater than or equal to 1.5 mol % and less than or equal to 6 mol %, greater than or equal to 1.5 mol % and less than or equal to 5.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 5 mol %, greater than or equal to 1.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 4 mol %, greater than or equal to 1.5 mol % and less than or equal to 3.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 3 mol %, greater than or equal to 1.5 mol % and less than or equal to 2.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 2 mol %, greater than or equal to 2 mol % and less than or equal to 8 mol %, greater than or equal to 2 mol % and less than or equal to 7 mol %, greater than or equal to 2 mol % and less than or equal to 6 mol %, greater than or equal to 2 mol % and less than or equal to 5.5 mol %, greater than or equal to 2 mol % and less than or equal to 5 mol %, greater than or equal to 2 mol % and less than or equal to 4.5 mol %, greater than or equal to 2 mol % and less than or equal to 4 mol %, greater than or equal to 2 mol % and less than or equal to 3.5 mol %, greater than or equal to 2 mol % and less than or equal to 3 mol %, greater than or equal to 2 mol % and less than or equal to 2.5 mol %, greater than or equal to 0 mol % and less than or equal to 8 mol %, greater than or equal to 2.5 mol % and less than or equal to 7 mol %, greater than or equal to 2.5 mol % and less than or equal to 6 mol %, greater than or equal to 2.5 mol % and less than or equal to 5.5 mol %, greater than or equal to 2.5 mol % and less than or equal to 5 mol %, greater than or equal to 2.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 2.5 mol % and less than or equal to 4 mol %, greater than or equal to 2.5 mol % and less than or equal to 3.5 mol %, or even greater than or equal to 2.5 mol % and less than or equal to 3 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant colored glass article may be substantially free or free of MgO.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0 mol % and less than or equal to 6 mol % MgO. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.1 mol % and less than or equal to 5 mol % MgO. In embodiments, the concentration of MgO in the glass composition may be greater than or equal to 0 mol %, greater than or equal to 0.1 mol %, or even greater than or equal to 0.5 mol %. In embodiments, the concentration of MgO in the glass composition may be less than or equal to 6 mol %, less than or equal to 5 mol %, less than or equal to 4 mol %, less than or equal to 3 mol %, less than or equal to 2 mol %, or even less than or equal to 1 mol %. In embodiments, the concentration of MgO in the glass composition may be greater than or equal to 0 mol % and less than or equal to 6 mol %, greater than or equal to 0 mol % and less than or equal to 5 mol %, greater than or equal to 0 mol % and less than or equal to 4 mol %, greater than or equal to 0 mol % and less than or equal to 3 mol %, greater than or equal to 0 mol % and less than or equal to 2 mol %, greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0.1 mol % and less than or equal to 6 mol %, greater than or equal to 0.1 mol % and less than or equal to 5 mol %, greater than or equal to 0.1 mol % and less than or equal to 4 mol %, greater than or equal to 0.1 mol % and less than or equal to 3 mol %, greater than or equal to 0.1 mol % and less than or equal to 2 mol %, greater than or equal to 0.1 mol % and less than or equal to 1 mol %, greater than or equal to 0.5 mol % and less than or equal to 6 mol %, greater than or equal to 0.5 mol % and less than or equal to 5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4 mol %, greater than or equal to 0.5 mol % and less than or equal to 3 mol %, greater than or equal to 0.5 mol % and less than or equal to 2 mol %, or even greater than or equal to 0.5 mol % and less than or equal to 1 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant colored glass article may be substantially free or free of MgO.

In addition to improving colorant retention, ZnO lowers the viscosity of the glass compositions, which enhances the formability, the strain point, and the Young's modulus, and may improve ion-exchangeability. However, when too much ZnO is added to the glass composition, the diffusivity of sodium and potassium ions in the glass composition decreases which, in turn, adversely impacts the ion-exchange performance (i.e., the ability to ion-exchange) of the resultant colored glass article.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0 mol % and less than or equal to 5 mol % ZnO or even greater than or equal to 0 mol % and less than or equal to 4.5 mol % ZnO. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.1 mol % and less than or equal to 4 mol % ZnO. In embodiments, the concentration of ZnO in the glass composition may be greater than or equal to 0 mol %, greater than or equal to 0.1 mol %, greater than or equal to 0.25 mol %, greater than or equal to 0.5 mol %, greater than or equal to 0.75 mol %, greater than or equal to 1 mol %, greater than or equal to 1.5 mol %, or even greater than or equal to 2 mol %. In embodiments, the concentration of ZnO in the glass composition may be less than or equal to 5 mol %, less than or equal to 4.5 mol %, less than or equal to 4 mol %, less than or equal to 3.5 mol %, less than or equal to 3 mol %, less than or equal to 2.5 mol %, less than or equal to 2 mol %, less than or equal to 1.75 mol %, less than or equal to 1.5 mol %, less than or equal to 1.25 mol %, or even less than or equal to 1 mol %. In embodiments, the concentration of ZnO in the glass composition may be greater than or equal to 0 mol % and less than or equal to 5 mol %, greater than or equal to 0 mol % and less than or equal to 4.5 mol %, greater than or equal to 0 mol % and less than or equal to 4 mol %, greater than or equal to 0 mol % and less than or equal to 3.5 mol %, greater than or equal to 0 mol % and less than or equal to 3 mol %, greater than or equal to 0 mol % and less than or equal to 2.5 mol %, greater than or equal to 0 mol % and less than or equal to 2 mol %, greater than or equal to 0 mol % and less than or equal to 1.75 mol %, greater than or equal to 0 mol % and less than or equal to 1.5 mol %, greater than or equal to 0 mol % and less than or equal to 1.25 mol %, greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0.1 mol % and less than or equal to 5 mol %, greater than or equal to 0.1 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 4 mol %, greater than or equal to 0.1 mol % and less than or equal to 3.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 3 mol %, greater than or equal to 0.1 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 2 mol %, greater than or equal to 0.1 mol % and less than or equal to 1.75 mol %, greater than or equal to 0.1 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 1.25 mol %, greater than or equal to 0.1 mol % and less than or equal to 1 mol %, greater than or equal to 0.25 mol % and less than or equal to 5 mol %, greater than or equal to 0.25 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.25 mol % and less than or equal to 4 mol %, greater than or equal to 0.25 mol % and less than or equal to 3.5 mol %, greater than or equal to 0.25 mol % and less than or equal to 3 mol %, greater than or equal to 0.25 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.25 mol % and less than or equal to 2 mol %, greater than or equal to 0.25 mol % and less than or equal to 1.75 mol %, greater than or equal to 0.25 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.25 mol % and less than or equal to 1.25 mol %, greater than or equal to 0.25 mol % and less than or equal to 1 mol %, greater than or equal to 0.5 mol % and less than or equal to 5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4 mol %, greater than or equal to 0.5 mol % and less than or equal to 3.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 3 mol %, greater than or equal to 0.5 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 2 mol %, greater than or equal to 0.5 mol % and less than or equal to 1.75 mol %, greater than or equal to 0.5 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 1.25 mol %, greater than or equal to 0.5 mol % and less than or equal to 1 mol %, greater than or equal to 0.75 mol % and less than or equal to 5 mol %, greater than or equal to 0.75 mol % and less than or equal to 4 mol %, greater than or equal to 0.75 mol % and less than or equal to 3 mol %, greater than or equal to 0.75 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.75 mol % and less than or equal to 2 mol %, greater than or equal to 0.75 mol % and less than or equal to 1.75 mol %, greater than or equal to 0.75 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.75 mol % and less than or equal to 1.25 mol %, greater than or equal to 1 mol % and less than or equal to 1 mol %, greater than or equal to 1 mol % and less than or equal to 5 mol %, greater than or equal to 1 mol % and less than or equal to 4.5 mol %, greater than or equal to 1 mol % and less than or equal to 4 mol %, greater than or equal to 1 mol % and less than or equal to 3.5 mol %, greater than or equal to 1 mol % and less than or equal to 3 mol %, greater than or equal to 1 mol % and less than or equal to 2.5 mol %, greater than or equal to 1 mol % and less than or equal to 2 mol %, greater than or equal to 1 mol % and less than or equal to 1.75 mol %, greater than or equal to 1 mol % and less than or equal to 1.5 mol %, greater than or equal to 1 mol % and less than or equal to 1.25 mol %, greater than or equal to 1.5 mol % and less than or equal to 5 mol %, greater than or equal to 1.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 4 mol %, greater than or equal to 1.5 mol % and less than or equal to 3.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 3 mol %, greater than or equal to 1.5 mol % and less than or equal to 2.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 2 mol %, greater than or equal to 1.5 mol % and less than or equal to 1.75 mol %, greater than or equal to 2 mol % and less than or equal to 5 mol %, greater than or equal to 2 mol % and less than or equal to 4.5 mol %, greater than or equal to 2 mol % and less than or equal to 4 mol %, greater than or equal to 2 mol % and less than or equal to 3.5 mol %, greater than or equal to 2 mol % and less than or equal to 3 mol %, or even greater than or equal to 2 mol % and less than or equal to 2.5 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant colored glass article may be substantially free or free of ZnO.

Like ZnO and the alkaline earth oxide MgO, other alkaline earth oxides, such as CaO, SrO and BaO, decrease the melting point of the glass composition. Accordingly, CaO, SrO, and/or BaO may be included in the glass composition and the resultant colored glass articles to lower the melting point of the glass composition, which may help improve colorant retention.

In embodiments, the glass compositions and the resultant colored glass articles described herein may further comprise CaO. CaO lowers the viscosity of a glass composition, which enhances the formability, the strain point and the Young's modulus, and may improve the ion-exchangeability. However, when too much CaO is added to the glass composition, the diffusivity of sodium and potassium ions in the glass composition decreases which, in turn, adversely impacts the ion-exchange performance (i.e., the ability to ion-exchange) of the resultant glass.

In embodiments, the concentration of CaO in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol %, greater than or equal to 0.25 mol %, greater than or equal to 0.5 mol %, or even greater than or equal to 0.75 mol %. In embodiments, the concentration of CaO in the glass composition and the resultant colored glass article may be less than or equal to 7 mol %, less than or equal to 6.5 mol %, less than or equal to 6 mol %, less than or equal to 5.5 mol %, less than or equal to 5 mol %, less than or equal to 4.5 mol %, less than or equal to 4 mol %, less than or equal to 3.5 mol %, less than or equal to 3 mol %, less than or equal to 2.5 mol %, less than or equal to 2 mol %, less than or equal to 1.75 mol %, less than or equal to 1.5 mol %, less than or equal to 1.25 mol %, or even less than or equal to 1 mol %. In embodiments, the concentration of CaO in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 7 mol %, greater than or equal to 0 mol % and less than or equal to 6.5 mol %, greater than or equal to 0 mol % and less than or equal to 6 mol %, greater than or equal to 0 mol % and less than or equal to 5.5 mol %, greater than or equal to 0 mol % and less than or equal to 5 mol %, greater than or equal to 0 mol % and less than or equal to 4.5 mol %, greater than or equal to 0 mol % and less than or equal to 4 mol %, greater than or equal to 0 mol % and less than or equal to 3.5 mol %, greater than or equal to 0 mol % and less than or equal to 3 mol %, greater than or equal to 0 mol % and less than or equal to 2.5 mol %, greater than or equal to 0 mol % and less than or equal to 2 mol %, greater than or equal to 0 mol % and less than or equal to 1.75 mol %, greater than or equal to 0 mol % and less than or equal to 1.5 mol %, greater than or equal to 0 mol % and less than or equal to 1.25 mol %, greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0.25 mol % and less than or equal to 7 mol %, greater than or equal to 0.25 mol % and less than or equal to 6.5 mol %, greater than or equal to 0.25 mol % and less than or equal to 6 mol %, greater than or equal to 0.25 mol % and less than or equal to 5.5 mol %, greater than or equal to 0.25 mol % and less than or equal to 5 mol %, greater than or equal to 0.25 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.25 mol % and less than or equal to 4 mol %, greater than or equal to 0.25 mol % and less than or equal to 3.5 mol %, greater than or equal to 0.25 mol % and less than or equal to 3 mol %, greater than or equal to 0.25 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.25 mol % and less than or equal to 2 mol %, greater than or equal to 0.25 mol % and less than or equal to 1.75 mol %, greater than or equal to 0.25 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.25 mol % and less than or equal to 1.25 mol %, greater than or equal to 0.25 mol % and less than or equal to 1 mol %, greater than or equal to 0.5 mol % and less than or equal to 7 mol %, greater than or equal to 0.5 mol % and less than or equal to 6.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 6 mol %, greater than or equal to 0.5 mol % and less than or equal to 5.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4 mol %, greater than or equal to 0.5 mol % and less than or equal to 3.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 3 mol %, greater than or equal to 0.5 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 2 mol %, greater than or equal to 0.5 mol % and less than or equal to 1.75 mol %, greater than or equal to 0.5 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 1.25 mol %, greater than or equal to 0.5 mol % and less than or equal to 1 mol %, greater than or equal to 0.75 mol % and less than or equal to 7 mol %, greater than or equal to 0.75 mol % and less than or equal to 6.5 mol %, greater than or equal to 0.75 mol % and less than or equal to 6 mol %, greater than or equal to 0.75 mol % and less than or equal to 5.5 mol %, greater than or equal to 0.75 mol % and less than or equal to 5 mol %, greater than or equal to 0.75 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.75 mol % and less than or equal to 4 mol %, greater than or equal to 0.75 mol % and less than or equal to 3.5 mol %, greater than or equal to 0.75 mol % and less than or equal to 3 mol %, greater than or equal to 0.75 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.75 mol % and less than or equal to 2 mol %, greater than or equal to 0.75 mol % and less than or equal to 1.75 mol %, greater than or equal to 0.75 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.75 mol % and less than or equal to 1.25 mol %, or even greater than or equal to 0.75 mol % and less than or equal to 1 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant colored glass article may be substantially free or free of CaO.

In embodiments, the concentration of SrO in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol %, greater than or equal to 0.25 mol %, greater than or equal to 0.5 mol %, or even greater than or equal to 0.75 mol %. In embodiments, the concentration of SrO in the glass composition and the resultant colored glass article may be less than or equal to 2 mol %, less than or equal to 1.75 mol %, less than or equal to 1.5 mol %, less than or equal to 1.25 mol %, or even less than or equal to 1 mol %. In embodiments, the concentration of SrO in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 2 mol %, greater than or equal to 0 mol % and less than or equal to 1.75 mol %, greater than or equal to 0 mol % and less than or equal to 1.5 mol %, greater than or equal to 0 mol % and less than or equal to 1.25 mol %, greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0.25 mol % and less than or equal to 2 mol %, greater than or equal to 0.25 mol % and less than or equal to 1.75 mol %, greater than or equal to 0.25 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.25 mol % and less than or equal to 1.25 mol %, greater than or equal to 0.25 mol % and less than or equal to 1 mol %, greater than or equal to 0.5 mol % and less than or equal to 2 mol %, greater than or equal to 0.5 mol % and less than or equal to 1.75 mol %, greater than or equal to 0.5 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 1.25 mol %, greater than or equal to 0.5 mol % and less than or equal to 1 mol %, greater than or equal to 0.75 mol % and less than or equal to 2 mol %, greater than or equal to 0.75 mol % and less than or equal to 1.75 mol %, greater than or equal to 0.75 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.75 mol % and less than or equal to 1.25 mol %, or even greater than or equal to 0.75 mol % and less than or equal to 1 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant colored glass article may be substantially free or free of SrO.

In embodiments, the concentration of BaO in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol %, greater than or equal to 0.25 mol %, greater than or equal to 0.5 mol %, or even greater than or equal to 0.75 mol %. In embodiments, the concentration of BaO in the glass composition and the resultant colored glass article may be less than or equal to 2 mol %, less than or equal to 1.75 mol %, less than or equal to 1.5 mol %, less than or equal to 1.25 mol %, or even less than or equal to 1 mol %. In embodiments, the concentration of BaO in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 2 mol %, greater than or equal to 0 mol % and less than or equal to 1.75 mol %, greater than or equal to 0 mol % and less than or equal to 1.5 mol %, greater than or equal to 0 mol % and less than or equal to 1.25 mol %, greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0.25 mol % and less than or equal to 2 mol %, greater than or equal to 0.25 mol % and less than or equal to 1.75 mol %, greater than or equal to 0.25 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.25 mol % and less than or equal to 1.25 mol %, greater than or equal to 0.25 mol % and less than or equal to 1 mol %, greater than or equal to 0.5 mol % and less than or equal to 2 mol %, greater than or equal to 0.5 mol % and less than or equal to 1.75 mol %, greater than or equal to 0.5 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 1.25 mol %, greater than or equal to 0.5 mol % and less than or equal to 1 mol %, greater than or equal to 0.75 mol % and less than or equal to 2 mol %, greater than or equal to 0.75 mol % and less than or equal to 1.75 mol %, greater than or equal to 0.75 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.75 mol % and less than or equal to 1.25 mol %, or even greater than or equal to 0.75 mol % and less than or equal to 1 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant colored glass article may be substantially free or free of BaO.

R′O, as used herein, is the sum (in mol %) of MgO, ZnO, CaO, BaO, and SrO (i.e. R′O=MgO (mol %)+ZnO (mol %)+CaO (mol %)+BaO (mol %)+SrO (mol %)). In embodiments, the concentration of R′O in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol %, greater than or equal to 0.5 mol %, greater than or equal to 1 mol %, greater than or equal to 1.5 mol %, greater than or equal to 2 mol %, or even greater than or equal to 2.5 mol %. In embodiments, the concentration of R′O in the glass composition and the resultant colored glass article may be less than or equal to 8 mol %, less than or equal to 7.5 mol %, less than or equal to 7 mol %, less than or equal to 6.5 mol %, less than or equal to 6 mol %, less than or equal to 5 mol %, less than or equal to 5 mol %, less than or equal to 4.5 mol %, less than or equal to 4 mol %, or even less than or equal to 3.5 mol %. In embodiments, the concentration of R′O in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 8 mol %, greater than or equal to 0 mol % and less than or equal to 7.5 mol %, greater than or equal to 0 mol % and less than or equal to 7 mol %, greater than or equal to 0 mol % and less than or equal to 6.5 mol %, greater than or equal to 0 mol % and less than or equal to 6 mol %, greater than or equal to 0 mol % and less than or equal to 5.5 mol %, greater than or equal to 0 mol % and less than or equal to 5 mol %, greater than or equal to 0 mol % and less than or equal to 4.5 mol %, greater than or equal to 0 mol % and less than or equal to 4 mol %, greater than or equal to 0 mol % and less than or equal to 3.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 8 mol %, greater than or equal to 0.5 mol % and less than or equal to 7.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 7 mol %, greater than or equal to 0.5 mol % and less than or equal to 6.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 6 mol %, greater than or equal to 0.5 mol % and less than or equal to 5.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4 mol %, greater than or equal to 0.5 mol % and less than or equal to 3.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 8 mol %, greater than or equal to 1 mol % and less than or equal to 7.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 7 mol %, greater than or equal to 1 mol % and less than or equal to 6.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 6 mol %, greater than or equal to 1 mol % and less than or equal to 5.5 mol %, greater than or equal to 1 mol % and less than or equal to 5 mol %, greater than or equal to 1 mol % and less than or equal to 4.5 mol %, greater than or equal to 1 mol % and less than or equal to 4 mol %, greater than or equal to 1 mol % and less than or equal to 3.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 8 mol %, greater than or equal to 1.5 mol % and less than or equal to 7.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 7 mol %, greater than or equal to 1.5 mol % and less than or equal to 6.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 6 mol %, greater than or equal to 1.5 mol % and less than or equal to 5.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 5 mol %, greater than or equal to 1.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 4 mol %, greater than or equal to 1.5 mol % and less than or equal to 3.5 mol %, greater than or equal to 2 mol % and less than or equal to 8 mol %, greater than or equal to 2 mol % and less than or equal to 7.5 mol %, greater than or equal to 2 mol % and less than or equal to 7 mol %, greater than or equal to 2 mol % and less than or equal to 6.5 mol %, greater than or equal to 2 mol % and less than or equal to 6 mol %, greater than or equal to 2 mol % and less than or equal to 5.5 mol %, greater than or equal to 2 mol % and less than or equal to 5 mol %, greater than or equal to 2 mol % and less than or equal to 4.5 mol %, greater than or equal to 2 mol % and less than or equal to 4 mol %, greater than or equal to 2 mol % and less than or equal to 3.5 mol %, greater than or equal to 2.5 mol % and less than or equal to 8 mol %, greater than or equal to 2.5 mol % and less than or equal to 7.5 mol %, greater than or equal to 2.5 mol % and less than or equal to 7 mol %, greater than or equal to 2.5 mol % and less than or equal to 6.5 mol %, greater than or equal to 2.5 mol % and less than or equal to 6 mol %, greater than or equal to 2.5 mol % and less than or equal to 5.5 mol %, greater than or equal to 2.5 mol % and less than or equal to 5 mol %, greater than or equal to 2.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 2.5 mol % and less than or equal to 4 mol %, or even greater than or equal to 2.5 mol % and less than or equal to 3.5 mol %, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the sum of R₂O, CaO, MgO, and ZnO (R₂O (mol %)+CaO (mol %)+MgO (mol %)+ZnO (mol %) may be less than or equal to 35 mol %. While not wishing to be bound by theory, it is believed that minimizing the combination of R₂O, CaO, MgO, and ZnO in the glass composition may provide the resultant colored glass article with a desirable dielectric constant, such as when the colored glass article is used as a portion of a housing for an electronic device. In embodiments, R₂O (mol %)+CaO (mol %)+MgO (mol %)+ZnO (mol %) may be greater than or equal to 1 mol % and less than or equal to 35 mol %, greater than or equal to 1 mol % and less than or equal to 30 mol %, greater than or equal to 1 mol % and less than or equal to 25 mol %, greater than or equal to 1 mol % and less than or equal to 20 mol %, greater than or equal to 1 mol % and less than or equal to 15 mol %, greater than or equal to 1 mol % and less than or equal to 10 mol %, greater than or equal to 2 mol % and less than or equal to 35 mol %, greater than or equal to 2 mol % and less than or equal to 30 mol %, greater than or equal to 2 mol % and less than or equal to 25 mol %, greater than or equal to 2 mol % and less than or equal to 20 mol %, greater than or equal to 2 mol % and less than or equal to 15 mol %, greater than or equal to 2 mol % and less than or equal to 10 mol %, greater than or equal to 3 mol % and less than or equal to 35 mol %, greater than or equal to 3 mol % and less than or equal to 30 mol %, greater than or equal to 3 mol % and less than or equal to 25 mol %, greater than or equal to 3 mol % and less than or equal to 20 mol %, greater than or equal to 3 mol % and less than or equal to 15 mol %, greater than or equal to 3 mol % and less than or equal to 10 mol %, greater than or equal to 4 mol % and less than or equal to 35 mol %, greater than or equal to 4 mol % and less than or equal to 30 mol %, greater than or equal to 4 mol % and less than or equal to 25 mol %, greater than or equal to 4 mol % and less than or equal to 20 mol %, greater than or equal to 4 mol % and less than or equal to 15 mol %, greater than or equal to 4 mol % and less than or equal to 10 mol %, greater than or equal to 4 mol % and less than or equal to 35 mol %, greater than or equal to 5 mol % and less than or equal to 30 mol %, greater than or equal to 5 mol % and less than or equal to 25 mol %, greater than or equal to 5 mol % and less than or equal to 20 mol %, greater than or equal to 5 mol % and less than or equal to 15 mol %, greater than or equal to 5 mol % and less than or equal to 10 mol %, greater than or equal to 6 mol % and less than or equal to 35 mol %, greater than or equal to 6 mol % and less than or equal to 30 mol %, greater than or equal to 6 mol % and less than or equal to 25 mol %, greater than or equal to 6 mol % and less than or equal to 20 mol %, greater than or equal to 6 mol % and less than or equal to 15 mol %, greater than or equal to 6 mol % and less than or equal to 10 mol %, greater than or equal to 7 mol % and less than or equal to 35 mol %, greater than or equal to 7 mol % and less than or equal to 30 mol %, greater than or equal to 7 mol % and less than or equal to 25 mol %, greater than or equal to 7 mol % and less than or equal to 20 mol %, greater than or equal to 7 mol % and less than or equal to 15 mol %, greater than or equal to 7 mol % and less than or equal to 10 mol %, greater than or equal to 8 mol % and less than or equal to 35 mol %, greater than or equal to 8 mol % and less than or equal to 30 mol %, greater than or equal to 8 mol % and less than or equal to 25 mol %, greater than or equal to 8 mol % and less than or equal to 20 mol %, greater than or equal to 8 mol % and less than or equal to 15 mol %, or even greater than or equal to 8 mol % and less than or equal to 10 mol %.

In embodiments, the sum of Al₂O₃, MgO, and ZnO present in the glass composition and the resultant colored glass article (i.e., Al₂O₃(mol %)+MgO (mol %)+ZnO (mol %)) may be greater than or equal to 12 mol % and less than or equal to 22 mol %. While not wishing to be bound by theory, it is believed that combinations of Al₂O₃, MgO, and ZnO within this range may aid in avoiding the formation of undesired crystal phases in the resultant colored glass articles. For example and without limitation, when the colorant package in the glass composition and the resultant colored glass article includes Cr₂O₃, combinations of Al₂O₃, MgO, and ZnO within this range may avoid the formation of Cr-spinel crystals by increasing the solubility of the Cr₂O₃colorant and thereby expanding the color gamut that may be achieved in the resultant colored glass articles. Without wishing to be bound by theory, it is hypothesized that similar behavior may occur with colorants other than Cr₂O₃.

In embodiments, the sum of Al₂O₃, MgO, and ZnO in the glass composition and the resultant colored glass article may be greater than or equal to 13 mol % and less than or equal to 21.5 mol %. In embodiments, the sum of Al₂O₃, MgO, and ZnO in the glass composition and the resultant colored glass article may be greater than or equal to 12 mol %, greater than or equal to 13 mol %, greater than or equal to 14 mol %, greater than or equal to 15 mol %, or even greater than or equal to 16 mol %. In embodiments, the sum of Al₂O₃, MgO, and ZnO in the glass composition and the resultant colored glass article may be less than or equal to 22 mol %, less than or equal to 21.5 mol %, less than or equal to 21 mol %, less than or equal to 20.5 mol %, or even less than or equal to 20 mol %. In embodiments, the sum of Al₂O₃, MgO, and ZnO in the glass composition and the resultant colored glass article may be greater than or equal to 12 mol % and less than or equal to 22 mol %, greater than or equal to 12 mol % and less than or equal to 21.5 mol %, greater than or equal to 12 mol % and less than or equal to 21 mol %, greater than or equal to 12 mol % and less than or equal to 20.5 mol %, greater than or equal to 12 mol % and less than or equal to 20 mol %, greater than or equal to 13 mol % and less than or equal to 22 mol %, greater than or equal to 13 mol % and less than or equal to 21.5 mol %, greater than or equal to 13 mol % and less than or equal to 21 mol %, greater than or equal to 13 mol % and less than or equal to 20.5 mol %, greater than or equal to 13 mol % and less than or equal to 20 mol %, greater than or equal to 14 mol % and less than or equal to 22 mol %, greater than or equal to 14 mol % and less than or equal to 21.5 mol %, greater than or equal to 14 mol % and less than or equal to 21 mol %, greater than or equal to 14 mol % and less than or equal to 20.5 mol %, greater than or equal to 15 mol % and less than or equal to 20 mol %, greater than or equal to 15 mol % and less than or equal to 22 mol %, greater than or equal to 15 mol % and less than or equal to 21.5 mol %, greater than or equal to 15 mol % and less than or equal to 21 mol %, greater than or equal to 15 mol % and less than or equal to 20.5 mol %, greater than or equal to 15 mol % and less than or equal to 20 mol %, greater than or equal to 16 mol % and less than or equal to 22 mol %, greater than or equal to 16 mol % and less than or equal to 21.5 mol %, greater than or equal to 16 mol % and less than or equal to 21 mol %, greater than or equal to 16 mol % and less than or equal to 20.5 mol %, or even greater than or equal to 16 mol % and less than or equal to 20 mol %, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the sum of Al₂O₃, MgO, CaO, and ZnO present in the glass composition and the resultant colored glass article (i.e., Al₂O₃(mol %)+MgO (mol %)+CaO (mol %)+ZnO (mol %)) may be greater than or equal to 12 mol % and less than or equal to 24 mol %. While not wishing to be bound by theory, it is believed that combinations of Al₂O₃, MgO, CaO and ZnO within this range may aid in avoiding the formation of undesired crystal phases in the resultant colored glass articles. In addition, a relatively high concentration of high field strength modifiers, such as Mg, Ca, and Zn cations, may also improve the mechanical properties, such as fracture toughness, elastic modulus and drop test performance, of the resultant colored glass article.

In embodiments, the sum of Al₂O₃, MgO, CaO and ZnO in the glass composition and the resultant colored glass article may be greater than or equal to 12 mol % and less than or equal to 24 mol %. In embodiments, the sum of Al₂O₃, MgO, CaO and ZnO in the glass composition and the resultant colored glass article may be greater than or equal to 12 mol %, greater than or equal to 13 mol %, greater than or equal to 14 mol %, greater than or equal to 15 mol %, or even greater than or equal to 16 mol %. In embodiments, the sum of Al₂O₃, MgO, CaO and ZnO in the glass composition and the resultant colored glass article may be less than or equal to 24 mol %, less than or equal to 23 mol %, less than or equal to 22 mol %, less than or equal to 21.5 mol %, less than or equal to 21 mol %, less than or equal to 20.5 mol %, or even less than or equal to 20 mol %. In embodiments, the sum of Al₂O₃, MgO, CaO and ZnO in the glass composition and the resultant colored glass article may be greater than or equal to 12 mol % and less than or equal to 24 mol %, greater than or equal to 12 mol % and less than or equal to 23 mol %, greater than or equal to 12 mol % and less than or equal to 22 mol %, greater than or equal to 12 mol % and less than or equal to 21.5 mol %, greater than or equal to 12 mol % and less than or equal to 21 mol %, greater than or equal to 12 mol % and less than or equal to 20.5 mol %, greater than or equal to 12 mol % and less than or equal to 20 mol %, greater than or equal to 13 mol % and less than or equal to 24 mol %, greater than or equal to 13 mol % and less than or equal to 23 mol %, greater than or equal to 13 mol % and less than or equal to 22 mol %, greater than or equal to 13 mol % and less than or equal to 21.5 mol %, greater than or equal to 13 mol % and less than or equal to 21 mol %, greater than or equal to 13 mol % and less than or equal to 20.5 mol %, greater than or equal to 13 mol % and less than or equal to 20 mol %, greater than or equal to 14 mol % and less than or equal to 24 mol %, greater than or equal to 14 mol % and less than or equal to 23 mol %, greater than or equal to 14 mol % and less than or equal to 22 mol %, greater than or equal to 14 mol % and less than or equal to 21.5 mol %, greater than or equal to 14 mol % and less than or equal to 21 mol %, greater than or equal to 14 mol % and less than or equal to 20.5 mol %, greater than or equal to 15 mol % and less than or equal to 24 mol %, greater than or equal to 15 mol % and less than or equal to 23 mol %, greater than or equal to 15 mol % and less than or equal to 22 mol %, greater than or equal to 15 mol % and less than or equal to 21.5 mol %, greater than or equal to 15 mol % and less than or equal to 21 mol %, greater than or equal to 15 mol % and less than or equal to 20.5 mol %, greater than or equal to 15 mol % and less than or equal to 20 mol %, greater than or equal to 16 mol % and less than or equal to 24 mol %, greater than or equal to 16 mol % and less than or equal to 23 mol %, greater than or equal to 16 mol % and less than or equal to 22 mol %, greater than or equal to 16 mol % and less than or equal to 21.5 mol %, greater than or equal to 16 mol % and less than or equal to 21 mol %, greater than or equal to 16 mol % and less than or equal to 20.5 mol %, or even greater than or equal to 16 mol % and less than or equal to 20 mol %, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the glass composition and the resultant colored glass article may optionally include Cl, which may enable growth of particular crystal phases containing colorant. For example, when the colorant package included in the glass comprises Au, the inclusion of Cl may enable the growth of certain Au crystals. In embodiments, the concentration of Cl in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % or even greater than or equal to 0.1 mol %. In embodiments, the concentration of Cl in the glass composition and the resultant colored glass article may be less than or equal to 0.5 mol % or even less than or equal to 0.25 mol %. In embodiments, the concentration of Cl in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 0.5 mol %, greater than or equal to 0 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.5 mol %, or even greater than or equal to 0.1 mol % and less than or equal to 0.25 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant colored glass article may be substantially free or free of Cl. In embodiments where the colorant package comprises Ag, the glass composition and resultant colored glass article include less than 100 ppm of halides, including Cl.

In embodiments, the glass compositions and the resultant colored glass articles described herein may further comprise ZrO₂. While not wishing to be bound by theory, it is believed that ZrO₂may act as a multivalent species that serves as redox couples to supply oxygen to certain colorants, for example Au, during relatively low-temperature heat treatment, which helps improve retention of the colorant. Without wishing to be bound by theory, it is hypothesized that similar behavior may occur with colorants other than Au. ZrO₂may also act as an additional colorant, producing colored glass articles that may be, for example, red in color. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.01 mol % and less than or equal to 2 mol % ZrO₂. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.01 mol % and less than or equal to 2 mol % ZrO₂. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.1 mol % and less than or equal to 1.5 mol % ZrO₂. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.25 mol % and less than or equal to 1.5 mol % ZrO₂. In embodiments, the concentration of ZrO₂in the glass composition may be greater than or equal to 0 mol %, greater than or equal to 0.01 mol %, greater than or equal to 0.1 mol %, or even greater than or equal to 0.2 mol %. In embodiments, the concentration of ZrO₂in the glass composition may be less than or equal to 2 mol %, less than or equal to 1.5 mol %, less than or equal to 1 mol %, less than or equal to 0.75 mol %, or even less than or equal to 0.5 mol %. In embodiments, the concentration of ZrO₂in the glass composition may be greater than or equal to 0 mol % and less than or equal to 2 mol %, greater than or equal to 0 mol % and less than or equal to 1.5 mol %, greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0 mol % and less than or equal to 0.75 mol %, greater than or equal to 0 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 2 mol %, greater than or equal to 0.01 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 1 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 2 mol %, greater than or equal to 0.1 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 1 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.2 mol % and less than or equal to 2 mol %, greater than or equal to 0.2 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.2 mol % and less than or equal to 1 mol %, greater than or equal to 0.2 mol % and less than or equal to 0.75 mol %, or even greater than or equal to 0.2 mol % and less than or equal to 0.5 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant colored glass article may be substantially free or free of ZrO₂.

In embodiments, the glass compositions and the resultant colored glass articles described herein may further comprise Fe₂O₃, which may help improve colorant retention. Fe₂O₃is a multivalent species that serves as redox couples to supply oxygen to certain colorants, for example Au, during relatively low-temperature heat treatment, which helps improve retention of the colorant. Without wishing to be bound by theory, it is hypothesized that similar behavior may occur with colorants other than Au. Fe₂O₃may also act as a colorant, producing colored glass articles that may, for example, be pink or red in color. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.01 mol % and less than or equal to 1 mol % Fe₂O₃or even greater than or equal to 0.1 mol % and less than or equal to 1 mol % Fe₂O₃. In embodiments, the concentration of Fe₂O₃in the glass composition may be greater than or equal to 0 mol %, greater than or equal to 0.01 mol %, or even greater than or equal to 0.1 mol %. In embodiments, the concentration of Fe₂O₃in the glass composition may be less than or equal to 1 mol %, less than or equal to 0.75 mol %, less than or equal to 0.5 mol %, or even less than or equal to 0.25 mol %. In embodiments, the concentration of Fe₂O₃in the glass composition may be greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0 mol % and less than or equal to 0.75 mol %, greater than or equal to 0 mol % and less than or equal to 0.5 mol %, greater than or equal to 0 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.01 mol % and less than or equal to 1 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.05 mol % and less than or equal to 1 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.1 mol % and less than or equal to 1 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.25 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant colored glass article may be substantially free or free of Fe₂O₃.

In embodiments, the glass compositions and the resultant colored glass articles described herein may further comprise SnO₂, Sb₂O₃, and/or Bi₂O₃. Like MgO and ZnO, SnO₂, Sb₂O₃, and Bi₂O₃may help lower the melting point of the glass composition. Accordingly, SnO₂, Sb₂O₃, and/or Bi₂O₃may be included in the glass composition and the resultant colored glass articles to lower the melting point and improve colorant retention. In embodiments in which the colorant package includes Ag, SnO₂also aids in the reduction of Ag in the glass leading to the formation of silver particles in the glass. While not wishing to be bound by theory, in embodiments where the colorant package includes Au, it is believed that additions of SnO₂may also aid in the reduction of Au in the glass, leading to the formation of gold particles. In embodiments that include SnO₂and/or Sb₂O₃, the SnO₂and/or Sb₂O₃may also function as a fining agent.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.01 mol % and less than or equal to 1 mol % SnO₂. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.05 mol % and less than or equal to 0.75 mol % SnO₂, greater than or equal to 0.05 mol % and less than or equal to 0.5 mol % SnO₂, or even greater than or equal to 0.1 mol % and less than or equal to 0.25 mol % SnO₂. In embodiments, the concentration of SnO₂in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol %, greater than or equal to 0.01 mol %, greater than or equal to 0.05 mol %, or even greater than or equal to 0.1 mol %. In embodiments, the concentration of SnO₂in the glass composition and the resultant colored glass article may be less than or equal to 1 mol %, less than or equal to 0.75 mol %, less than or equal to 0.5 mol %, or even less than or equal to 0.25 mol %. In embodiments, the concentration of SnO₂in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0 mol % and less than or equal to 0.75 mol %, greater than or equal to 0 mol % and less than or equal to 0.5 mol %, greater than or equal to 0 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.01 mol % and less than or equal to 1 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.05 mol % and less than or equal to 1 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.1 mol % and less than or equal to 1 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.5 mol %, or even greater than or equal to 0.1 mol % and less than or equal to 0.25 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant colored glass article may be substantially free or free of SnO₂.

In embodiments, the concentration of Sb₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol %, greater than or equal to 0.01 mol %, greater than or equal to 0.05 mol %, or even greater than or equal to 0.1 mol %. In embodiments, the concentration of Sb₂O₃in the glass composition and the resultant colored glass article may be less than or equal to 1 mol %, less than or equal to 0.75 mol %, less than or equal to 0.5 mol %, or even less than or equal to 0.25 mol %. In embodiments, the concentration of Sb₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0 mol % and less than or equal to 0.75 mol %, greater than or equal to 0 mol % and less than or equal to 0.5 mol %, greater than or equal to 0 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.01 mol % and less than or equal to 1 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.05 mol % and less than or equal to 1 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.1 mol % and less than or equal to 1 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.5 mol %, or even greater than or equal to 0.1 mol % and less than or equal to 0.25 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant colored glass article may be substantially free or free of Sb₂O₃.

In embodiments, the concentration of Bi₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol %, greater than or equal to 0.01 mol %, greater than or equal to 0.05 mol %, or even greater than or equal to 0.1 mol %. In embodiments, the concentration of Bi₂O₃in the glass composition and the resultant colored glass article may be less than or equal to 1 mol %, less than or equal to 0.75 mol %, less than or equal to 0.5 mol %, or even less than or equal to 0.25 mol %. In embodiments, the concentration of Bi₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0 mol % and less than or equal to 0.75 mol %, greater than or equal to 0 mol % and less than or equal to 0.5 mol %, greater than or equal to 0 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.01 mol % and less than or equal to 1 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.05 mol % and less than or equal to 1 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.1 mol % and less than or equal to 1 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.5 mol %, or even greater than or equal to 0.1 mol % and less than or equal to 0.25 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant colored glass article may be substantially free or free of Bi₂O₃.

In embodiments, the concentration of SO₃in the glass composition and the resultant colored glass article may be less than or equal to 0.1 mol %, less than or equal to 0.01 mol %, or even less than or equal to 0.001 mol %. In embodiments, the glass composition and the resultant colored glass article may be substantially free or free of SO₃.

In embodiments, the glass compositions and the resultant colored glass articles described herein may further comprise a reduced concentration or be substantially free or free of P₂O₅. In embodiments where P₂O₅is included, the P₂O₅may enhance the ion exchange characteristics of the resultant colored glass article. However, an increased concentration (i.e., greater than 1 mol %) of P₂O₅may reduce the retention of one or more colorants in the colorant package. While not wishing to be bound by theory, it is believed that P₂O₅may be more volatile than other glass network formers, such as SiO₂, which may contribute to reduced retention of colorants in the colorant package. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.1 mol % and less than or equal to 1 mol % P₂O₅. In embodiments, the concentration of P₂O₅in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol %, greater than or equal to 0.1 mol %, greater than or equal to 0.25 mol %, or even greater than or equal to 0.5 mol %. In embodiments, the concentration of P₂O₅in the glass composition and the resultant colored glass article may be less than or equal to 1 mol % or even less than or equal to 0.75 mol %. In embodiments, the concentration of P₂O₅in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.1 mol % and less than or equal to 1 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.25 mol % and less than or equal to 1 mol %, greater than or equal to 0.25 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.5 mol % and less than or equal to 1 mol %, or even greater than or equal to 0.5 mol % and less than or equal to 0.75 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant colored glass article may be substantially free or free of P₂O₅.

In the embodiments described herein, the glass compositions and resultant colored glass articles further comprise at least one colorant in a colorant package that functions to impart a desired color to the resultant colored glass article. In embodiments, the colorant package may comprise at least one of Au, Ag, Cr₂O₃, transition metal oxides (e.g., CuO, NiO, Co₃O₄, TiO₂, Cr₂O₃), rare earth metal oxides (e.g., CeO₂), and/or combinations thereof as colorants in the colorant package. In embodiments, the colorants in the colorant package may be selected from the group consisting of Au, Ag, Cr₂O₃, transition metal oxides (e.g., CuO, NiO, Co₃O₄, TiO₂, Cr₂O₃), rare earth metal oxides (e.g., CeO₂), and combinations thereof. In embodiments, the glass compositions and resultant colored glass articles may include greater than or equal to 1×10⁻⁶mol % and less than or equal to 10 mol % of colorant (i.e., the sum of all colorants in the colorant package). In embodiments, the concentration of the colorant package in the glass compositions and resultant colored glass articles may be greater than or equal to 1×10⁻⁶mol % and less than or equal to 9.5 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 9 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 8.5 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 8 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 7.5 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 7 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 6.5 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 6 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 5.5 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 5 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 4.5 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 4 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 3.5 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 3 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 2.5 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 2 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 1.5 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 1 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 0.5 mol %, greater than or equal to 0.0005 mol % and less than or equal to 10 mol %, greater than or equal to 0.0005 mol % and less than or equal to 9.5 mol %, greater than or equal to 0.0005 mol % and less than or equal to 9 mol %, greater than or equal to 0.0005 mol % and less than or equal to 8.5 mol %, greater than or equal to 0.0005 mol % and less than or equal to 8 mol %, greater than or equal to 0.0005 mol % and less than or equal to 7.5 mol %, greater than or equal to 0.0005 mol % and less than or equal to 7 mol %, greater than or equal to 0.0005 mol % and less than or equal to 6.5 mol %, greater than or equal to 0.0005 mol % and less than or equal to 6 mol %, greater than or equal to 0.0005 mol % and less than or equal to 5.5 mol %, greater than or equal to 0.0005 mol % and less than or equal to 5 mol %, greater than or equal to 0.0005 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.0005 mol % and less than or equal to 4 mol %, greater than or equal to 0.0005 mol % and less than or equal to 3.5 mol %, greater than or equal to 0.0005 mol % and less than or equal to 3 mol %, greater than or equal to 0.0005 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.0005 mol % and less than or equal to 2 mol %, greater than or equal to 0.0005 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.0005 mol % and less than or equal to 1 mol %, greater than or equal to 0.0005 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 9.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 9 mol %, greater than or equal to 0.001 mol % and less than or equal to 8.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 8 mol %, greater than or equal to 0.001 mol % and less than or equal to 7.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 7 mol %, greater than or equal to 0.001 mol % and less than or equal to 6.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 6 mol %, greater than or equal to 0.001 mol % and less than or equal to 5.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 5 mol %, greater than or equal to 0.001 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 4 mol %, greater than or equal to 0.001 mol % and less than or equal to 3.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 3 mol %, greater than or equal to 0.001 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 2 mol %, greater than or equal to 0.001 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 1 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 9.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 9 mol %, greater than or equal to 0.01 mol % and less than or equal to 8.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 8 mol %, greater than or equal to 0.01 mol % and less than or equal to 7.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 7 mol %, greater than or equal to 0.01 mol % and less than or equal to 6.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 6 mol %, greater than or equal to 0.01 mol % and less than or equal to 5.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 5 mol %, greater than or equal to 0.01 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 4 mol %, greater than or equal to 0.01 mol % and less than or equal to 3.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 3 mol %, greater than or equal to 0.01 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 2 mol %, greater than or equal to 0.01 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 1 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.5 mol %, or any and all sub-ranges formed from any of these endpoints.

Colorant: Transition Metal Oxides and/or Rare Earth Oxides

In embodiments, the colorant package in the glass compositions and the resultant colored glass articles may include colorants that comprise or consist of transition metal oxides, rare earth oxides, or combinations thereof, to achieve a desired color. In embodiments, transition metal oxides and/or rare earth oxides may be included in the glass compositions as the sole colorant or in combination with other colorants. In embodiments, colorants based on transition metal oxides and/or rare earth oxides may include NiO, Co₃O₄, Cr₂O₃, CuO, CeO₂, TiO₂and/or combinations thereof. In embodiments, colorants based on transition metal oxides and/or rare earth oxides may further include oxides of V, Mn, Fe, Cu, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Cd, Hf, Ta, W, Re, Os, Ir, Pt, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, and Er.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.001 mol %, such as greater than or equal to 0.001 mol % and less than or equal to 10 mol %, NiO+Co₃O₄+Cr₂O₃+CuO+CeO₂+TiO₂. In embodiments, the concentration of NiO+Co₃O₄+Cr₂O₃+CuO+CeO₂+TiO₂in the glass composition and the resultant colored glass article may be greater than or equal to 0.001 mol % and less than or equal to 5 mol %, greater than or equal to 0.001 mol % and less than or equal to 4 mol %, greater than or equal to 0.001 mol % and less than or equal to 3 mol %, greater than or equal to 0.001 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 2 mol %, greater than or equal to 0.001 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 5 mol %, greater than or equal to 0.01 mol % and less than or equal to 4 mol %, greater than or equal to 0.01 mol % and less than or equal to 3 mol %, greater than or equal to 0.01 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 2 mol %, greater than or equal to 0.01 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.02 mol % and less than or equal to 5 mol %, greater than or equal to 0.02 mol % and less than or equal to 4 mol %, greater than or equal to 0.02 mol % and less than or equal to 3 mol %, greater than or equal to 0.02 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.02 mol % and less than or equal to 2 mol %, greater than or equal to 0.02 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 5 mol %, greater than or equal to 0.1 mol % and less than or equal to 4 mol %, greater than or equal to 0.1 mol % and less than or equal to 3 mol %, greater than or equal to 0.1 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 2 mol %, greater than or equal to 0.1 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4 mol %, greater than or equal to 0.5 mol % and less than or equal to 3 mol %, greater than or equal to 0.5 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 2 mol %, greater than or equal to 0.5 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.7 mol % and less than or equal to 5 mol %, greater than or equal to 0.7 mol % and less than or equal to 4 mol %, greater than or equal to 0.7 mol % and less than or equal to 3 mol %, greater than or equal to 0.7 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.7 mol % and less than or equal to 2 mol %, greater than or equal to 0.7 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.9 mol % and less than or equal to 5 mol %, greater than or equal to 0.9 mol % and less than or equal to 4 mol %, greater than or equal to 0.9 mol % and less than or equal to 3 mol %, greater than or equal to 0.9 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.9 mol % and less than or equal to 2 mol %, greater than or equal to 0.9 mol % and less than or equal to 1.5 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and resultant glass article may comprise 0 mol % of one or more of NiO, Co₃O₄, Cr₂O₃, CuO, CeO₂, and/or TiO₂.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.001 mol %, such as greater than or equal to 0.001 mol % and less than or equal to 3 mol %, NiO+Co₃O₄+Cr₂O₃+CuO. In embodiments, the concentration of NiO+Co₃O₄+Cr₂O₃+CuO in the glass composition and the resultant colored glass article may be greater than or equal to 0.001 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 2 mol %, greater than or equal to 0.001 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 1 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.4 mol %, greater than or equal to 0.01 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 2 mol %, greater than or equal to 0.01 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 1 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.4 mol %, greater than or equal to 0.02 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.02 mol % and less than or equal to 2 mol %, greater than or equal to 0.02 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.02 mol % and less than or equal to 1 mol %, greater than or equal to 0.02 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.02 mol % and less than or equal to 0.4 mol %, greater than or equal to 0.1 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 2 mol %, greater than or equal to 0.1 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 1 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.4 mol %, greater than or equal to 0.2 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.2 mol % and less than or equal to 2 mol %, greater than or equal to 0.2 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.2 mol % and less than or equal to 1 mol %, greater than or equal to 0.2 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.2 mol % and less than or equal to 0.4 mol %, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and resultant glass article may comprise 0 mol % of one or more of NiO, Co₃O₄, Cr₂O₃, and/or CuO.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0 mol % TiO₂, such as greater than or equal to 0 mol % and less than or equal to 2 mol % or even greater than or equal to 0.01 mol % and less than or equal to 2 mol %, TiO₂. In embodiments, the concentration of TiO₂in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 2 mol %, greater than or equal to 0 mol % and less than or equal to 1.5 mol %, greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0 mol % and less than or equal to 0.75 mol %, greater than or equal to 0 mol % and less than or equal to 0.5 mol %, greater than or equal to 0 mol % and less than or equal to 0.4 mol %, greater than or equal to 0.01 mol % and less than or equal to 2 mol %, greater than or equal to 0.01 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 1 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.4 mol %, greater than or equal to 0.1 mol % and less than or equal to 2 mol %, greater than or equal to 0.1 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 1 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.4 mol %, greater than or equal to 0.2 mol % and less than or equal to 2 mol %, greater than or equal to 0.2 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.2 mol % and less than or equal to 1 mol %, greater than or equal to 0.2 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.2 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.2 mol % and less than or equal to 0.4 mol %, greater than or equal to 0.3 mol % and less than or equal to 2 mol %, greater than or equal to 0.3 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.3 mol % and less than or equal to 1 mol %, greater than or equal to 0.3 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.3 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.3 mol % and less than or equal to 0.4 mol %, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.1 mol %, such as greater than or equal to 0.1 mol % and less than or equal to 2 mol %, CeO₂. In embodiments, the concentration of CeO₂in the glass composition and the resultant colored glass article may be greater than or equal to 0.1 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 1 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.4 mol %, greater than or equal to 0.2 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.2 mol % and less than or equal to 1 mol %, greater than or equal to 0.2 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.2 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.2 mol % and less than or equal to 0.4 mol %, greater than or equal to 0.3 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.3 mol % and less than or equal to 1 mol %, greater than or equal to 0.3 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.3 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.3 mol % and less than or equal to 0.4 mol %, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0 mol %, such as greater than or equal to 0.01 mol % and less than or equal to 0.05 mol %, NiO. In embodiments, the concentration of NiO in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 0.05 mol %, greater than or equal to 0 mol % and less than or equal to 0.04 mol %, greater than or equal to 0 mol % and less than or equal to 0.035 mol %, greater than or equal to 0 mol % and less than or equal to 0.03 mol %, greater than or equal to 0 mol % and less than or equal to 0.025 mol %, greater than or equal to 0 mol % and less than or equal to 0.02 mol %, greater than or equal to 0 mol % and less than or equal to 0.015 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.05 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.04 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.035 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.03 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.025 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.02 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.015 mol %, greater than or equal to 0.015 mol % and less than or equal to 0.05 mol %, greater than or equal to 0.015 mol % and less than or equal to 0.04 mol %, greater than or equal to 0.015 mol % and less than or equal to 0.035 mol %, greater than or equal to 0.015 mol % and less than or equal to 0.03 mol %, greater than or equal to 0.015 mol % and less than or equal to 0.025 mol %, or even greater than or equal to 0.015 mol % and less than or equal to 0.02 mol %, and all sub-ranges formed from any of these endpoints.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0 mol %, such as greater than or equal to 0.1 mol % and less than or equal to 0.5 mol %, CuO. In embodiments, the concentration of CuO in the glass composition and the resultant colored glass article may be greater than or equal to 0.1 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.4 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.35 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.3 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.2 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.15 mol %, greater than or equal to 0.15 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.15 mol % and less than or equal to 0.4 mol %, greater than or equal to 0.15 mol % and less than or equal to 0.35 mol %, greater than or equal to 0.15 mol % and less than or equal to 0.3 mol %, greater than or equal to 0.15 mol % and less than or equal to 0.25 mol %, or even greater than or equal to 0.15 mol % and less than or equal to 0.2 mol %, and all sub-ranges formed from any of these endpoints.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0 mol %, such as greater than or equal to 0.0001 mol % and less than or equal to 0.01 mol %, Co₃O₄. In embodiments, the concentration of Co₃O₄in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 0.01 mol %, greater than or equal to 0 mol % and less than or equal to 0.0095 mol %, greater than or equal to 0 mol % and less than or equal to 0.009 mol %, greater than or equal to 0 mol % and less than or equal to 0.0085 mol %, greater than or equal to 0 mol % and less than or equal to 0.0075 mol %, greater than or equal to 0 mol % and less than or equal to 0.007 mol %, greater than or equal to 0 mol % and less than or equal to 0.0065 mol %, greater than or equal to 0 mol % and less than or equal to 0.006 mol %, greater than or equal to 0 mol % and less than or equal to 0.0055 mol %, greater than or equal to 0 mol % and less than or equal to 0.005 mol %, greater than or equal to 0 mol % and less than or equal to 0.0045 mol %, greater than or equal to 0 mol % and less than or equal to 0.004 mol %, greater than or equal to 0 mol % and less than or equal to 0.0035 mol %, greater than or equal to 0 mol % and less than or equal to 0.003 mol %, greater than or equal to 0 mol % and less than or equal to 0.0025 mol %, greater than or equal to 0 mol % and less than or equal to 0.002 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.01 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.0095 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.009 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.0085 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.0075 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.007 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.0065 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.006 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.0055 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.005 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.0045 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.004 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.0035 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.003 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.0025 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.002 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.01 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.0095 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.009 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.0085 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.0075 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.007 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.0065 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.006 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.0055 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.005 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.0045 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.004 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.0035 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.003 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.0025 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.002 mol %, and all sub-ranges formed from any of these endpoints.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0 mol %, such as greater than or equal to 0.01 mol % and less than or equal to 0.05 mol %, Cr₂O₃. In embodiments, the concentration of Cr₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 0.05 mol %, greater than or equal to 0 mol % and less than or equal to 0.04 mol %, greater than or equal to 0 mol % and less than or equal to 0.035 mol %, greater than or equal to 0 mol % and less than or equal to 0.03 mol %, greater than or equal to 0 mol % and less than or equal to 0.025 mol %, greater than or equal to 0 mol % and less than or equal to 0.02 mol %, greater than or equal to 0 mol % and less than or equal to 0.015 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.05 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.04 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.035 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.03 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.025 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.02 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.015 mol %, greater than or equal to 0.015 mol % and less than or equal to 0.05 mol %, greater than or equal to 0.015 mol % and less than or equal to 0.04 mol %, greater than or equal to 0.015 mol % and less than or equal to 0.035 mol %, greater than or equal to 0.015 mol % and less than or equal to 0.03 mol %, greater than or equal to 0.015 mol % and less than or equal to 0.025 mol %, or even greater than or equal to 0.015 mol % and less than or equal to 0.02 mol %, and all sub-ranges formed from any of these endpoints.

In embodiments, the glass composition and the resultant colored glass article may comprise at least one of: greater than or equal to 0.001 mol % NiO+Co₃O₄+Cr₂O₃+CuO, such as greater than or equal to 0.001 mol % and less than or equal to 3 mol % NiO+Co₃O₄+Cr₂O₃+CuO (or any of the ranges of NiO+Co₃O₄+Cr₂O₃+CuO described herein); greater than or equal to 0.1 mol % CeO₂, such as greater than or equal to 0.1 mol % and less than or equal to 1.5 mol % CeO₂(or any of the ranges of CeO₂described herein); and greater than or equal to 0.1 mol % TiO₂, such as greater than or equal to 0.1 mol % and less than or equal to 2 mol % TiO₂(or any of the ranges of TiO₂described herein).

Colorant: Gold

In embodiments, the colorant package in the glass compositions and the resultant colored glass articles may comprise or consist of Au as a colorant to achieve a desired color. In embodiments, Au may be included in the glass compositions as the sole colorant or in combination with other colorants. As described herein, in embodiments, the glass compositions and the resultant colored glass articles may be formulated to improve the retention of Au, thereby expanding the color gamut achievable in the resultant colored glass articles.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than 0.0005 mol % and less than or equal to 1 mol % Au. In embodiments, the glass composition and the resultant colored glass article may comprise greater than 0.001 mol % and less than or equal to 0.5 mol % Au. In embodiments, the concentration of Au in the glass composition and the resultant colored glass article may be greater than or equal to 0.0005 mol %, greater than or equal to 0.001 mol %, greater than or equal to 0.002 mol % Au, greater than or equal to 0.005 mol %, or even greater than or equal to 0.01 mol %. In embodiments, the concentration of Au in the glass composition and the resultant colored glass article may be less than or equal to 1 mol %, less than or equal to 0.75 mol %, less than or equal to 0.5 mol %, less than or equal to 0.25 mol %, less than or equal to 0.1 mol %, or even less than or equal to 0.05 mol %. In embodiments, the concentration of Au in the glass composition and the resultant colored glass article may be greater than or equal to 0.0005 mol % and less than or equal to 1 mol %, greater than or equal to 0.0005 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.0005 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.0005 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.0005 mol % and less than or equal to 0.1 mol %, greater than or equal to 0.0005 mol % and less than or equal to 0.05 mol %, greater than or equal to 0.001 mol % and less than or equal to 1 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.1 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.05 mol %, greater than or equal to 0.002 mol % and less than or equal to 1 mol %, greater than or equal to 0.002 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.002 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.002 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.002 mol % and less than or equal to 0.1 mol %, greater than or equal to 0.002 mol % and less than or equal to 0.05 mol %, greater than or equal to 0.005 mol % and less than or equal to 1 mol %, greater than or equal to 0.005 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.005 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.005 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.005 mol % and less than or equal to 0.1 mol %, greater than or equal to 0.005 mol % and less than or equal to 0.05 mol %, greater than or equal to 0.01 mol % and less than or equal to 1 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.1 mol %, or even greater than or equal to 0.01 mol % and less than or equal to 0.05 mol %, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 1×10⁻⁶mol % and less than or equal to 1 mol % Au. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 1×10⁻⁶mol % and less than or equal to 0.01 mol % Au. In embodiments, the concentration of Au in the glass composition and the resultant colored glass article may be greater than or equal to 1×10⁻⁶mol %, greater than or equal to 1×10⁻⁵mol %, greater than or equal to 0.0001 mol %, greater than or equal to 0.0005 mol %, or even greater than or equal to 0.001 mol %. In embodiments, the concentration of Au in the glass composition and the resultant colored glass article may be less than or equal to 1 mol %, less than or equal to 0.75 mol %, less than or equal to 0.5 mol %, less than or equal to 0.25 mol %, less than or equal to 0.1 mol %, less than or equal to 0.05 mol %, or even less than or equal to 0.01. In embodiments, the concentration of Au in the glass composition and the resultant colored glass article may be greater than or equal to 1×10⁻⁶mol % and less than or equal to 0.75 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 0.5 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 0.25 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 0.1 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 0.05 mol %, greater than or equal to 1×10⁻⁶mol % and less than or equal to 0.01 mol %, greater than or equal to 1×10⁻⁵mol % and less than or equal to 1 mol %, greater than or equal to 1×10⁻⁵mol % and less than or equal to 0.75 mol %, greater than or equal to 1×10⁻⁵mol % and less than or equal to 0.5 mol %, greater than or equal to 1×10⁻⁵mol % and less than or equal to 0.25 mol %, greater than or equal to 1×10⁻⁵mol % and less than or equal to 0.1 mol %, greater than or equal to 1×10⁻⁵mol % and less than or equal to 0.05 mol %, greater than or equal to 1×10⁻⁵mol % and less than or equal to 0.01 mol %, greater than or equal to 0.0001 mol % and less than or equal to 1 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.1 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.05 mol %, greater than or equal to 0.0001 mol % and less than or equal to 0.01 mol %, greater than or equal to 0.0005 mol % and less than or equal to 1 mol %, greater than or equal to 0.0005 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.0005 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.0005 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.0005 mol % and less than or equal to 0.1 mol %, greater than or equal to 0.0005 mol % and less than or equal to 0.05 mol %, greater than or equal to 0.0005 mol % and less than or equal to 0.01 mol %, greater than or equal to 0.001 mol % and less than or equal to 1 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.1 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.05 mol %, or even greater than or equal to 0.001 mol % and less than or equal to 0.01 mol %, or any and all sub-ranges formed from any of these endpoints.

A different color gamut may be achieved by including secondary colorants in addition to Au. For example, in embodiments, the glass composition and resultant colored glass article may comprise greater than or equal to 0 mol % and less than or equal to 1 mol % of a cation “M”, wherein “M” is at least one of F, Cl, Br, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Se, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Te, W, Ir, Pt, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, and Er.

Colorant: Cr₂O₃

In embodiments, the colorant package used in the glass compositions and the resultant colored glass articles described herein may comprise or consist of Cr₂O₃as a colorant to achieve a desired color. In embodiments, Cr₂O₃may be included in the glass compositions as the sole colorant or in combination with other colorants. For example, in embodiments where Cr₂O₃is utilized as a colorant, other transition metal oxides may be included in the glass composition to modify the color imparted to the glass, including, for example and without limitation, CuO, NiO, and/or Co₃O₄. As described herein, in embodiments, the glass compositions and the resultant colored glass articles may be formulated to improve the solubility of Cr₂O₃, thereby expanding the color gamut achievable in the resultant colored glass articles.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0 mol % and less than or equal to 2 mol % Cr₂O₃. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.001 mol % and less than or equal to 1.5 mol % Cr₂O₃. In embodiments, the concentration of Cr₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol %, greater than or equal to 0.001 mol %, greater than or equal to 0.005 mol %, greater than or equal to 0.01 mol %, or even greater than or equal to 0.05 mol %. In embodiments, the concentration of Cr₂O₃in the glass composition and the resultant colored glass article may be less than or equal to 2 mol %, less than or equal to 1.5 mol %, less than or equal to 1 mol %, less than or equal to 0.5 mol %, or even less than or equal to 0.1 mol %. In embodiments, the concentration of Cr₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 2 mol %, greater than or equal to 0 mol % and less than or equal to 1.5 mol %, greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0 mol % and less than or equal to 0.5 mol %, greater than or equal to 0 mol % and less than or equal to 0.1 mol %, greater than or equal to 0.001 mol % and less than or equal to 2 mol %, greater than or equal to 0.001 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 1 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.1 mol %, greater than or equal to 0.005 mol % and less than or equal to 2 mol %, greater than or equal to 0.005 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.005 mol % and less than or equal to 1 mol %, greater than or equal to 0.005 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.005 mol % and less than or equal to 0.1 mol %, greater than or equal to 0.01 mol % and less than or equal to 2 mol %, greater than or equal to 0.01 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 1 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.1 mol %, greater than or equal to 0.05 mol % and less than or equal to 2 mol %, greater than or equal to 0.05 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.05 mol % and less than or equal to 1 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.5 mol %, or even greater than or equal to 0.05 mol % and less than or equal to 0.1 mol %, or any and all sub-ranges formed from any of these endpoints.

In embodiments where the colorant package includes Cr₂O₃as a colorant, the glass compositions and the resultant colored glass articles are per-alkali (i.e., R₂O (mol %)+R′O (mol %)-Al₂O₃(mol %) is greater than or equal to 0.5 mol %) to increase the solubility of Cr₂O₃and avoid Cr-spinel crystal formation. However, when the glass composition has an excessive amount of alkali after charge balancing Al₂O₃, the alkali may form non-bridging oxygen around SiO₂, which degrades fracture toughness. Accordingly, in embodiments, R₂O+R′O—Al₂O₃in the glass composition and the resultant colored glass article may be limited (e.g., less than or equal to 6 mol %) to prevent a reduction in fracture toughness.

In embodiments, R₂O+R′O—Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 0.5 mol % and less than or equal to 6 mol %. In embodiments, R₂O+R′O—Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 1 mol % and less than or equal to 5.5 mol %. In embodiments, R₂O+R′O—Al₂O₃in the glass composition and the colored resultant glass article may be greater than or equal to 0.5 mol %, greater than or equal to 1 mol %, greater than or equal to 1.5 mol %, or even greater than or equal to 2 mol %. In embodiments, R₂O+R′O—Al₂O₃in the glass composition and the resultant colored glass article may be less than or equal to 6 mol %, less than or equal to 5.5 mol %, less than or equal to 5 mol %, less than or equal to 4.5 mol %, less than or equal to 4 mol %, less than or equal to 3.5 mol %, or even less than or equal to 3 mol %. In embodiments, R₂O+R′O—Al₂O₃in the glass composition and the resultant colored glass article may be greater than or equal to 0.5 mol % and less than or equal to 6 mol %, greater than or equal to 0.5 mol % and less than or equal to 5.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4 mol %, greater than or equal to 0.5 mol % and less than or equal to 3.5 mol %, greater than or equal to 0.5 mol % and less than or equal to 3 mol %, greater than or equal to 1 mol % and less than or equal to 6 mol %, greater than or equal to 1 mol % and less than or equal to 5.5 mol %, greater than or equal to 1 mol % and less than or equal to 5 mol %, greater than or equal to 1 mol % and less than or equal to 4.5 mol %, greater than or equal to 1 mol % and less than or equal to 4 mol %, greater than or equal to 1 mol % and less than or equal to 3.5 mol %, greater than or equal to 1 mol % and less than or equal to 3 mol %, greater than or equal to 1.5 mol % and less than or equal to 6 mol %, greater than or equal to 1.5 mol % and less than or equal to 5.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 5 mol %, greater than or equal to 1.5 mol % and less than or equal to 4.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 4 mol %, greater than or equal to 1.5 mol % and less than or equal to 3.5 mol %, greater than or equal to 1.5 mol % and less than or equal to 3 mol %, greater than or equal to 2 mol % and less than or equal to 6 mol %, greater than or equal to 2 mol % and less than or equal to 5.5 mol %, greater than or equal to 2 mol % and less than or equal to 5 mol %, greater than or equal to 2 mol % and less than or equal to 4.5 mol %, greater than or equal to 2 mol % and less than or equal to 4 mol %, greater than or equal to 2 mol % and less than or equal to 3.5 mol %, or even greater than or equal to 2 mol % and less than or equal to 3 mol %, or any and all sub-ranges formed from any of these endpoints.

In embodiments where the colorant package comprises Cr₂O₃as a colorant, the glass compositions and the resultant colored glass articles may satisfy at least one of the following conditions and achieve the desired color: (1) less than or equal to 17.5 mol % Al₂O₃and/or R₂O+R′O—Al₂O₃greater than or equal to 0.5 mol %; (2) Al₂O₃+MgO+ZnO less than or equal to 22 mol %; and (3) MgO+ZnO less than or equal to 4.5 mol %.

In embodiments where the colorant comprises Cr₂O₃, different color gamuts may be achieved by including other colorants in addition to Cr₂O₃. For example, in embodiments, the glass composition and resultant colored glass article may comprise NiO, Co₃O₄, CuO, or combinations thereof in addition to Cr₂O₃.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0 mol % and less than or equal to 4 mol % NiO as a colorant in addition to Cr₂O₃. In embodiments, the concentration of NiO in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol %, greater than or equal to 0.01 mol %, or even greater than or equal to 0.05 mol %. In embodiments, the concentration of NiO in the glass composition and the resultant colored glass article may be less than or equal to 4 mol %, less than or equal to 3 mol %, less than or equal to 2 mol %, less than or equal to 1 mol %, less than or equal to 0.5 mol %, less than or equal to 0.25 mol %, or even less than or equal to 0.1 mol %. In embodiments, the concentration of NiO in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 4 mol %, greater than or equal to 0 mol % and less than or equal to 3 mol %, greater than or equal to 0 mol % and less than or equal to 2 mol %, greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0 mol % and less than or equal to 0.5 mol %, greater than or equal to 0 mol % and less than or equal to 0.25 mol %, greater than or equal to 0 mol % and less than or equal to 0.1 mol %, greater than or equal to 0.01 mol % and less than or equal to 4 mol %, greater than or equal to 0.01 mol % and less than or equal to 3 mol %, greater than or equal to 0.01 mol % and less than or equal to 2 mol %, greater than or equal to 0.01 mol % and less than or equal to 1 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.1 mol %, greater than or equal to 0.05 mol % and less than or equal to 4 mol %, greater than or equal to 0.05 mol % and less than or equal to 3 mol %, greater than or equal to 0.05 mol % and less than or equal to 2 mol %, greater than or equal to 0.05 mol % and less than or equal to 1 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.25 mol %, or even greater than or equal to 0.05 mol % and less than or equal to 0.1 mol %, or any and all sub-ranges formed between any of these endpoints.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0 mol % and less than or equal to 2 mol % Co₃O₄as a colorant in addition to Cr₂O₃. In embodiments, the concentration of Co₃O₄in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol %, greater than or equal to 0.001 mol %, greater than or equal to 0.005 mol %, or even greater than or equal to 0.01 mol %. In embodiments, the concentration of Co₃O₄in the glass composition and the resultant colored glass article may be less than or equal to 2 mol %, less than or equal to 1.5 mol %, less than or equal to 1 mol %, less than or equal to 0.5 mol %, less than or equal to 0.1 mol %, or even less than or equal to 0.05 mol %. In embodiments, the concentration of Co₃O₄in the glass composition and the resultant colored glass article may greater than or equal to 0 mol % and less than or equal to 2 mol %, greater than or equal to 0 mol % and less than or equal to 1.5 mol %, greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0 mol % and less than or equal to 0.5 mol %, greater than or equal to 0 mol % and less than or equal to 0.1 mol %, greater than or equal to 0 mol % and less than or equal to 0.05 mol %, greater than or equal to 0.001 mol % and less than or equal to 2 mol %, greater than or equal to 0.001 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 1 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.1 mol %, greater than or equal to 0.001 mol % and less than or equal to 0.05 mol %, greater than or equal to 0.005 mol % and less than or equal to 2 mol %, greater than or equal to 0.005 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.005 mol % and less than or equal to 1 mol %, greater than or equal to 0.005 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.005 mol % and less than or equal to 0.1 mol %, greater than or equal to 0.005 mol % and less than or equal to 0.05 mol %, greater than or equal to 0.01 mol % and less than or equal to 2 mol %, greater than or equal to 0.01 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 1 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.1 mol %, or even greater than or equal to 0.01 mol % and less than or equal to 0.05 mol %, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or 0 mol % and less than or equal to 5 mol % CuO as a colorant in addition to Cr₂O₃. In embodiments, the concentration of CuO in the glass composition and the resultant colored glass article may be greater than or equal 0 mol %, greater than or equal to 0.05 mol %, greater than or equal to 0.1 mol %, greater than or equal to 0.5 mol %, or even greater than or equal to 1 mol %. In embodiments, the concentration of CuO in the glass composition and the resultant colored glass article may be less than or equal to 5 mol %, less than or equal to 4 mol %, less than or equal to 3 mol %, or even less than or equal to 2 mol %. In embodiments, the concentration of CuO in the glass composition and the resultant colored glass article may be greater than or equal to 0 mol % and less than or equal to 5 mol %, greater than or equal to 0 mol % and less than or equal to 4 mol %, greater than or equal to 0 mol % and less than or equal to 3 mol %, greater than or equal to 0 mol % and less than or equal to 2 mol, greater than or equal to 0.05 mol % and less than or equal to 5 mol %, greater than or equal to 0.05 mol % and less than or equal to 4 mol %, greater than or equal to 0.05 mol % and less than or equal to 3 mol %, greater than or equal to 0.05 mol % and less than or equal to 2 mol %, greater than or equal to 0.1 mol % and less than or equal to 5 mol %, greater than or equal to 0.1 mol % and less than or equal to 4 mol %, greater than or equal to 0.1 mol % and less than or equal to 3 mol %, greater than or equal to 0.1 mol % and less than or equal to 2 mol %, greater than or equal to 0.5 mol % and less than or equal to 5 mol %, greater than or equal to 0.5 mol % and less than or equal to 4 mol %, greater than or equal to 0.5 mol % and less than or equal to 3 mol %, greater than or equal to 0.5 mol % and less than or equal to 2 mol %, greater than or equal to 1 mol % and less than or equal to 5 mol %, greater than or equal to 1 mol % and less than or equal to 4 mol %, greater than or equal to 1 mol % and less than or equal to 3 mol %, or even greater than or equal to 1 mol % and less than or equal to 2 mol %, or any and all sub-ranges formed from any of these endpoints.

Colorant: Silver

In embodiments, the colorant package used in the glass compositions and the resultant colored glass articles may comprise or consist of Ag as a colorant to achieve a desired color. As described herein, in embodiments, the glass compositions and the resultant colored glass articles may be formulated to improve the retention of Ag, thereby expanding the color gamut achievable in the resultant colored glass articles. In embodiments, Ag may be included in the glass compositions as the sole colorant or in combination with other colorants. In embodiments where Ag is utilized as a colorant in the glass composition, the color is created by the presence of anisotropic silver particles in the colored glass article that are formed from the reduction of silver ions in the glass composition.

Accordingly, in embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.01 mol % and less than or equal to 5 mol % Ag. In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 0.05 mol % and less than or equal to 2.5 mol % Ag, greater than or equal to 0.1 mol % and less than or equal to 1 mol % Ag, greater than or equal to 0.1 mol % and less than or equal to 0.75 mol % Ag, greater than or equal to 0.1 mol % and less than or equal to 0.5 mol % Ag, or greater than or equal to 0.1 mol % and less than or equal to 0.25 mol % Ag. In embodiments, the concentration of Ag in the glass composition and the resultant colored glass article may be greater than or equal to 0.01 mol %, greater than or equal to 0.05 mol %, or greater than or equal to 0.1 mol %. In embodiments, the concentration of Ag in the glass composition and the resultant colored glass article may be less than or equal to 5 mol %, less than or equal to 2.5 mol %, less than or equal to 1 mol %, less than or equal to 0.75 mol %, less than or equal to 0.5 mol %, or less than or equal to 0.25 mol %. In embodiments, the concentration of Ag in the glass composition and the resultant colored glass article may be greater than or equal to 0.01 mol % and less than or equal to 5 mol %, greater than or equal to 0.01 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 1 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.01 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.05 mol % and less than or equal to 5 mol %, greater than or equal to 0.05 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.05 mol % and less than or equal to 1 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.05 mol % and less than or equal to 0.25 mol %, greater than or equal to 0.1 mol % and less than or equal to 5 mol %, greater than or equal to 0.1 mol % and less than or equal to 2.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 1 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.75 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 0.25 mol %, or any and all sub-ranges formed from any of these endpoints.

Conventionally, halide-free colored glass articles that comprise silver in as-formed condition (i.e., colored glass articles that have not been subjected to mechanical stretching) produce only yellow, orange, and red colors upon a suitable heat treatment applied to the glass article in as-formed condition. These colors are generated by the formation of isotropic (i.e., nominally spherical) silver particles in the conventional, halide-free colored glass article. These isotropic silver particles support a single localized surface plasmon resonance. Isotropic silver particles are the most energetically favorable to form because they have the lowest surface area to volume ratio and, as a result, they are the most common geometry observed in colored glass articles that comprise silver.

In contrast, colored glass articles that comprise anisotropic silver particles can produce a much broader range of colors, such as pink, purple, blue, green, brown and black. As used herein, anisotropic silver particles refer to silver particles having an aspect ratio greater than 1, where the aspect ratio is the ratio of longest dimension of the particle to the shortest dimension of the particle (e.g., a ratio of the length of the particle to the width of the particle is greater than 1). This is in contrast to an isotropic silver particle in which the aspect ratio is 1. The broader color gamut produced in glasses having anisotropic silver particles is because anisotropic silver particles support two distinct plasmonic modes: a higher energy transverse mode, and a lower energy longitudinal mode. These two distinct plasmonic modes can be observed via absorption spectra of the colored glass articles, which typically have at least two distinct peaks when anisotropic silver particles are present in the glass. By varying the aspect ratio of anisotropic particles, the resonant absorption of these two plasmonic modes can be tuned and, as a result, the color shifted.

Conventionally, the formation of anisotropic metallic silver particles in glass can be either induced by elongating spherical particles of silver through shear forces (e.g., by stretching the colored glass article via re-draw) using mechanical stretching processes. The mechanical stretching process results in a glass article having silver particles that are generally aligned in parallel with one another along the stretching direction (i.e., the glass is polarized).

A conventional alternative to mechanical stretching processes for creating anisotropic metallic particles in a glass article is the incorporation of halides (e.g., F, Cl, and Br) in the glass composition. In halide-containing colored glass articles, anisotropic silver particles are formed by templating the particles on elongated and/or pyramidal-shaped halide crystals. However, the inclusion of halides in the glass composition may be undesirable.

In contrast, the colored glass articles comprising Ag as a colorant described herein may generate a broad range of colors, such as yellow, orange, red, green, pink, purple, brown, and black without the inclusion of halides in the glass composition or the use of mechanical stretching processes. Without being bound by any particular theory, it is believed that anisotropic silver particles may form in the colored glass articles of the present disclosure due to a mechanism similar to the template growth caused by the inclusion of halides in the glass composition. However, instead of templating on a halide-containing crystal or mechanically stretching isotropic silver particles, it has been unexpectedly found that anisotropic silver crystals may form on nano-sized crystals of spodumene, lithium silicate, and/or beta quartz during heat treatment of the glass article in its as formed condition. Additionally and/or alternatively, it is believed that anisotropic silver particles may precipitate at the interfaces between phase separated regions of the colored glass article and/or regions that are only partially crystalized. Further, these crystals and/or phase separated regions may form a nucleation site for the growth of anisotropic silver particles.

Accordingly, in embodiments, the glass composition and the resultant colored glass article including silver as a colorant may comprise less than 100 parts per million (ppm) of halides. For example, the glass compositions and the resultant colored glass articles comprising Ag as a colorant may comprise less than 100 ppm halides, such as less than 50 ppm halides, less than 25 ppm halides, less than 10 ppm halides, or even 0 ppm halides.

As noted previously, colored glass articles comprising Ag produced using mechanical stretching processes generally include anisotropic silver particles similar to those of the colored glass article of the present application. However, it should be noted that these mechanical stretching processes also result in the anisotropic silver particles being ordered and aligned (e.g., the longer dimensions of each anisotropic silver particles are facing in the same direction, such as in the direction of mechanical stretching). Put more simply, the colored glass articles produced using mechanical stretching processes are polarized due to the alignment of the anisotropic silver particles in the glass as a result of mechanical stretching.

In contrast, in the embodiments described herein, the colored glass articles comprising Ag as a colorant, which are not subjected to mechanical stretching processes, are non-polarized. In embodiments, the anisotropic silver particles of the colored glass article are not aligned (e.g., the longer dimensions of two or more anisotropic silver particles are facing in different directions) and, instead, the anisotropic silver particles are randomly aligned in the glass.

The term “length,” as used herein, refers to the longest dimension of the anisotropic silver particles. In embodiments, the anisotropic silver particles in the colored glass articles described herein have a length greater than or equal to 10 nm, greater than or equal to 12 nm, greater than or equal to 14 nm, greater than or equal to 16 nm, greater than or equal to 18 nm, greater than or equal to 10 nm, greater than or equal to 22 nm, greater than or equal to 24 nm, greater than or equal to 26 nm, greater than or equal to 28 nm, greater than or equal to 30 nm, greater than or equal to 32 nm, greater than or equal to 34 nm, greater than or equal to 36 nm, or even greater than or equal to 38 nm. The length of the anisotropic silver particles may be measured using image analysis on electron micrographs obtained from samples of the colored glass articles using software such as ImageJ software. To obtain the length and width of the anisotropic silver particles, a calibration is set by measuring the scale bar on the electron micrograph, converting each pixel to the appropriate unit length. The image is then converted into a grayscale image. A software measuring tool is then used to measure the number of pixels from one end to the other of each particle as well as the number of pixels across the greatest width of the particle. In embodiments an automated script is run to measure the length and aspect ratios of multiple particles automatically. In embodiments, the anisotropic silver particles in the colored glass articles described herein have a length less than or equal to 40 nm, less than or equal to 38 nm, less than or equal to 36 nm, less than or equal to 34 nm, less than or equal to 32 nm, less than or equal to 30 nm, less than or equal to 28 nm, less than or equal to 26 nm, less than or equal to 24 nm, less than or equal to 22 nm, or even less than or equal to 20 nm. In embodiments, the anisotropic silver particles in the colored glass articles described herein have a length greater than or equal to 10 nm and less than or equal to 40 nm, greater than or equal to 12 nm and less than or equal to 36 nm, greater than or equal to 14 nm and less than or equal to 34 nm, greater than or equal to 14 nm and less than or equal to 32 nm, greater than or equal to 14 nm and less than or equal to 28 nm, greater than or equal to 14 nm and less than or equal to 26 nm, greater than or equal to 16 nm and less than or equal to 26 nm, greater than or equal to 16 nm and less than or equal to 24 nm, greater than or equal to 16 nm and less than or equal to 22 nm, greater than or equal to 16 nm and less than or equal to 20 nm, or any and all sub-ranges formed from any of these endpoints.

The term “width,” as used herein, refers to the dimension of the anisotropic particles in a direction perpendicular to the longest dimension of the anisotropic particles (i.e., the dimension in a direction perpendicular to the length). In embodiments, the anisotropic silver particles in the colored glass articles described herein have a width greater than or equal to 6 nm, greater than or equal to 8 nm, greater than or equal to 10 nm, greater than or equal to 12 nm, or even greater than or equal to 14 nm. In embodiments, the anisotropic silver particles in the colored glass articles described herein have a width less than or equal to 20 nm, less than or equal to 18 nm, less than or equal to 16 nm, less than or equal to 12 nm, or even less than or equal to 10 nm. In embodiments, the anisotropic silver particles in the colored glass articles described herein have a width greater than or equal to 6 nm and less than or equal to 20 nm, greater than or equal to 6 nm and less than or equal to 18 nm, greater than or equal to 6 nm and less than or equal to 16 nm, greater than or equal to 8 nm and less than or equal to 20 nm, greater than or equal to 8 nm and less than or equal to 18 nm, greater than or equal to 8 nm and less than or equal to 16 nm, greater than or equal to 10 nm and less than or equal to 20 nm, greater than or equal to 10 nm and less than or equal to 18 nm, greater than or equal to 10 nm and less than or equal to 16 nm, greater than or equal to 10 nm and less than or equal to 14 nm, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the anisotropic silver particles in the colored glass articles described herein have an aspect ratio (i.e., the ratio of the length to the width of the anisotropic silver nanoparticles) greater than 1, greater than or equal to 1.5, greater than or equal to 2, or even greater than or equal to 2.5. In embodiments, the anisotropic silver particles in the colored glass articles described herein have an aspect ratio less than or equal to 3, less than or equal to 2.5, less than or equal to 2, or even less than or equal to 1.5. In embodiments, the anisotropic silver particles in the colored glass articles described herein have an aspect ratio greater than 1 and less than or equal to 3, greater than 1 and less than or equal to 2.5, greater than 1 and less than or equal to 2, greater than 1 and less than or equal to 1.5, greater than or equal to 1.5 and less than or equal to 3, greater than or equal to 1.5 and less than or equal to 2.5, greater than or equal to 1.5 and less than or equal to 2, greater than or equal to 2 and less than or equal to 3, greater than or equal to 2 and less than or equal to 2.5, or any and all sub-ranges formed from any of these endpoints.

The glass compositions and the resultant colored glass articles that include Ag as a colorant may further comprise one or more rare-earth oxides, such as CeO₂, Nd₂O₃, Er₂O₃. Rare-earth oxides may be added to provide additional visible light absorbance to the glass (in addition to that imparted by the silver) to further alter the color of the glass. Rare-earth oxides may also be added to increase the Young's modulus and/or the annealing point of the resultant glass.

In embodiments, the glass compositions and the resultant colored glass articles that include Ag as a colorant may further comprise greater than or equal to 0 mol % and less than or equal to 4 mol % of CeO₂, In embodiments, the glass compositions and the resultant colored glass articles that include Ag as a colorant may further comprise greater than or equal to 0 mol % and less than or equal to 3 mol % CeO₂, greater than or equal to 0 mol % and less than or equal to 1 mol % of CeO₂, greater than or equal to 0.05 mol % and less than or equal to 1 mol % of CeO₂, or greater than or equal to 0.05 mol % and less than or equal to 0.5 mol % of CeO₂. In embodiments, the concentration of CeO₂in the glass compositions and the resultant colored glass articles that comprise Ag as a colorant may be greater than or equal to 0 mol %, or even greater than or equal to 0.05 mol %. In embodiments, the concentration of CeO₂in the glass compositions and the resultant colored glass articles that comprise Ag as a colorant may be less than or equal to 4 mol %, less than or equal to 3 mol %, less than or equal to 2 mol %, less than or equal to 1 mol % or less than or equal to 0.5 mol %. In embodiments, the concentration of CeO₂in the glass compositions and the resultant colored glass articles that include Ag as a colorant may be greater than or equal to 0 mol % and less than or equal to 4 mol %, greater than or equal to 0 mol % and less than or equal to 3 mol %, greater than or equal to 0 mol % and less than or equal to 2 mol %, greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.05 mol % and less than or equal to 4 mol %, greater than or equal to 0.05 mol % and less than or equal to 3 mol %, greater than or equal to 0.05 mol % and less than or equal to 2 mol %, greater than or equal to 0.05 mol % and less than or equal to 1 mol %, or even greater than or equal to 0.05 mol % and less than or equal to 0.5 mol %, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the glass compositions and the resultant colored glass articles that include Ag as a colorant may comprise greater than or equal to 0 mol % and less than or equal to 4 mol % of Nd₂O₃, In embodiments, the glass compositions and the resultant colored glass articles that include Ag as a colorant may comprise greater than or equal to 0 mol % and less than or equal to 3 mol % Nd₂O₃, greater than or equal to 0 mol % and less than or equal to 1 mol % of Nd₂O₃, greater than or equal to 0 mol % and less than or equal to 1 mol % of Nd₂O₃, greater than or equal to 0.1 mol % and less than or equal to 1 mol % of Nd₂O₃, greater than or equal to 0.1 mol % and less than or equal to 1.5 mol % of Nd₂O₃, or greater than or equal to 0.1 mol % and less than or equal to 0.5 mol % of Nd₂O₃. In embodiments, the concentration of Nd₂O₃in the glass compositions and the resultant colored glass articles that include Ag as a colorant may be greater than or equal to 0 mol %, or even greater than or equal to 0.1 mol %. In embodiments, the concentration of Nd₂O₃in the glass compositions and the resultant colored glass articles that include Ag as a colorant may be less than or equal to 4 mol %, less than or equal to 3 mol %, less than or equal to 2 mol %, less than or equal to 1 mol % or less than or equal to 0.5 mol %. In embodiments, the concentration of one or more of Nd₂O₃in the glass compositions and the resultant colored glass articles that include Ag as a colorant may be greater than or equal to 0 mol % and less than or equal to 4 mol %, greater than or equal to 0 mol % and less than or equal to 3 mol %, greater than or equal to 0 mol % and less than or equal to 2 mol %, greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0 mol % and less than or equal to 1.5 mol %, greater than or equal to 0 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 4 mol %, greater than or equal to 0.1 mol % and less than or equal to 3 mol %, greater than or equal to 0.1 mol % and less than or equal to 2 mol %, greater than or equal to 0.1 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 1 mol %, or even greater than or equal to 0.1 mol % and less than or equal to 0.5 mol %, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the glass compositions and the resultant colored glass articles that include Ag as a colorant may comprise greater than or equal to 0 mol % and less than or equal to 4 mol % of Er₂O₃. In embodiments, the glass compositions and the resultant colored glass articles that include Ag as a colorant may comprise greater than or equal to 0 mol % and less than or equal to 3 mol % Er₂O₃, greater than or equal to 0 mol % and less than or equal to 1.5 mol % of Er₂O₃, greater than or equal to 0 mol % and less than or equal to 1 mol % of Er₂O₃, greater than or equal to 0.1 mol % and less than or equal to 1.5 mol % of Er₂O₃, greater than or equal to 0.1 mol % and less than or equal to 1 mol % of Er₂O₃, or greater than or equal to 0.1 mol % and less than or equal to 0.5 mol % of Er₂O₃. In embodiments, the concentration of Er₂O₃in the glass compositions and the resultant colored glass articles that include Ag as a colorant may be greater than or equal to 0 mol %, or even greater than or equal to 0.1 mol %. In embodiments, the concentration of Er₂O₃in the glass compositions and the resultant colored glass articles that include Ag as a colorant may be less than or equal to 4 mol %, less than or equal to 3 mol %, less than or equal to 2 mol %, less than or equal to 1 mol % or less than or equal to 0.5 mol %. In embodiments, the concentration of one or more of Er₂O₃in the glass compositions and the resultant colored glass articles that include Ag as a colorant may be greater than or equal to 0 mol % and less than or equal to 4 mol %, greater than or equal to 0 mol % and less than or equal to 3 mol %, greater than or equal to 0 mol % and less than or equal to 2 mol %, greater than or equal to 0 mol % and less than or equal to 1.5 mol %, greater than or equal to 0 mol % and less than or equal to 1 mol %, greater than or equal to 0 mol % and less than or equal to 0.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 4 mol %, greater than or equal to 0.1 mol % and less than or equal to 3 mol %, greater than or equal to 0.1 mol % and less than or equal to 2 mol %, greater than or equal to 0.1 mol % and less than or equal to 1.5 mol %, greater than or equal to 0.1 mol % and less than or equal to 1 mol %, or even greater than or equal to 0.1 mol % and less than or equal to 0.5 mol %, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the glass compositions and the resultant colored glass articles described herein may further include tramp materials such as TiO₂, MnO, MoO₃, WO₃, Y₂O₃, CdO, As₂O₃, sulfur-based compounds, such as sulfates, halogens, or combinations thereof. In embodiments, the glass composition and the resultant colored glass article may be substantially free or free of tramp materials such as TiO₂, MnO, MoO₃, WO₃, Y₂O₃, CdO, As₂O₃, sulfur-based compounds, such as sulfates, halogens, or combinations thereof.

In embodiments described herein, decreasing the melting point of the glass composition may help improve colorant retention because the glass compositions may be melted at relatively lower temperatures and colorant evaporation may be reduced.

Accordingly, the glass compositions and the resultant colored glass articles described herein may optionally include MgO and/or ZnO, which help lower the melting point of the glass composition. B₂O₃, Li₂O, and Na₂O also decrease the melting point of the glass composition. As described herein, other components may be added to the glass composition to lower the melting point thereof, such as SnO₂, Sb₂O₃, and Bi₂O₃. In embodiments, the glass composition may have a melting point less than or equal to 1550° C. In embodiments, the glass composition may have a melting point greater than or equal to 1300° C., greater than or equal to 1325° C., greater than or equal to 1350° C., greater than or equal to 1375° C., or even greater than or 1400° C. In embodiments, the glass composition may have a melting point less than or equal to 1550° C., less than or equal to 1525° C., less than or equal 1500° C., less than or equal to 1475° C., or even less than or equal to 1450° C. In embodiments, the melting point of the glass composition may be greater than or equal to 1300° C. and less than or equal to 1550° C., greater than or equal to 1300° C. and less than or equal to 1525° C., greater than or equal to 1300° C. and less than or equal to 1500° C., greater than or equal to 1300° C. and less than or equal to 1475° C., greater than or equal to 1300° C. and less than or equal to 1450° C., greater than or equal to 1325° C. and less than or equal to 1550° C., greater than or equal to 1325° C. and less than or equal to 1525° C., greater than or equal to 1325° C. and less than or equal to 1500° C., greater than or equal to 1325° C. and less than or equal to 1475° C., greater than or equal to 1325° C. and less than or equal to 1450° C., greater than or equal to 1350° C. and less than or equal to 1550° C., greater than or equal to 1350° C. and less than or equal to 1525° C., greater than or equal to 1350° C. and less than or equal to 1500° C., greater than or equal to 1350° C. and less than or equal to 1475° C., greater than or equal to 1350° C. and less than or equal to 1450° C., greater than or equal to 1375° C. and less than or equal to 1550° C., greater than or equal to 1375° C. and less than or equal to 1525° C., greater than or equal to 1375° C. and less than or equal to 1500° C., greater than or equal to 1375° C. and less than or equal to 1475° C., greater than or equal to 1375° C. and less than or equal to 1450° C., greater than or equal to 1400° C. and less than or equal to 1550° C., greater than or equal to 1400° C. and less than or equal to 1525° C., greater than or equal to 1400° C. and less than or equal to 1500° C., greater than or equal to 1400° C. and less than or equal to 1475° C., or even greater than or equal to 1400° C. and less than or equal to 1450° C., or any and all sub-ranges formed from any of these endpoints.

In embodiments, a liquidus temperature of the glass composition may be greater than or equal to 1000° C., greater than or equal to 1050° C., or even greater than or equal to 1100° C. In embodiments, a liquidus temperature of the precursor glass composition may be less than or equal to 1400° C., less than or equal to 1350° C. or even less than or equal to 1300° C. In embodiments, a liquidus temperature of the glass composition may be greater than or equal to 1000° C. and less than or equal to 1400° C., greater than or equal to 1000° C. and less than or equal to 1350° C., greater than or equal to 1000° C. and less than or equal to 1300° C., greater than or equal to 1050° C. and less than or equal to 1400° C., greater than or equal to 1050° C. and less than or equal to 1350° C., greater than or equal to 1000° C. and less than or equal to 1300° C., greater than or equal to 1100° C. and less than or equal to 1400° C., greater than or equal to 1100° C. and less than or equal to 1350° C., or even greater than or equal to 1100° C. and less than or equal to 1300° C., or any and all sub-ranges formed from any of these endpoints.

In embodiments, the viscosity of the glass composition may be adjusted to prevent devitrification of the glass composition and formation of colorant particles, such as Au particles, during melting and forming. Formation of colorant particles during melting and forming may limit the color gamut that may be achieved by heat treatment. In embodiments, to achieve the desired viscosity and thereby prevent formation of colorant particles before melting, the glass compositions and the resultant glass articles described herein may satisfy the relationship 5.72*Al₂O₃(mol %)-21.4*ZnO (mol %)-2.5*P₂O₅(mol %)-35*Li₂O (mol %)-16.6*B₂O₃(mol %)-20.5*MgO (mol %)-23.3*Na₂O (mol %)-27.9*SrO (mol %)-18.5*K₂O (mol %)-26.3*CaO (mol %) is greater than −609 mol %. While not wishing to be bound by theory, it is believe that this relationship may also hold true for glass compositions containing colorants other than Au, such as when the colorant comprises Ag (which may also form colorant particles in the glass). In embodiments, the glass compositions and the resultant glass articles described herein may satisfy the relationship 5.72*Al₂O₃(mol %)-21.4*ZnO (mol %)-2.5*P₂O₅(mol %)-35*Li₂O (mol %)-16.6*B₂O₃(mol %)-20.5*MgO (mol %)-23.3*Na₂O (mol %)-27.9*SrO (mol %)-18.5*K₂O (mol %)-26.3*CaO (mol %) is greater than −609 mol %, greater than or equal to −575 mol %, greater than or equal to −550 mol %, or even greater than or equal to −525 mol %. In embodiments, the glass compositions and the resultant glass articles described herein may satisfy the relationship 5.72*Al₂O₃(mol %)-21.4*ZnO (mol %)-2.5*P₂O₅(mol %)-35*Li₂O (mol %)-16.6*B₂O₃(mol %)-20.5*MgO (mol %)-23.3*Na₂O (mol %)-27.9*SrO (mol %)-18.5*K₂O (mol %)-26.3*CaO (mol %) is less than or equal to −400 mol %, less than or equal to −425 mol %, or even less than or equal to −450 mol %. In embodiments, the glass compositions and the resultant glass articles described herein may satisfy the relationship 5.72*Al₂O₃(mol %)-21.4*ZnO (mol %)-2.5*P₂O₅(mol %)-35*Li₂O (mol %)-16.6*B₂O₃(mol %)-20.5*MgO (mol %)-23.3*Na₂O (mol %)-27.9*SrO (mol %)-18.5*K₂O (mol %)-26.3*CaO (mol %) is greater than −609 mol % and less than or equal to −400 mol %, greater than −609 mol % and less than or equal to −425 mol %, greater than −609 mol % and less than or equal to −450 mol %, greater than or equal to −575 mol % and less than or equal to −400 mol %, greater than or equal to −575 mol % and less than or equal to −425 mol %, greater than or equal to −575 mol % and less than or equal to −450 mol %, greater than or equal to −550 mol % and less than or equal to −400 mol %, greater than or equal to −550 mol % and less than or equal to −425 mol %, greater than or equal to −550 mol % and less than or equal to −450 mol %, greater than or equal to −525 mol % and less than or equal to −400 mol %, greater than or equal to −525 mol % and less than or equal to −425 mol %, or even greater than or equal to −525 mol % and less than or equal to −450 mol %, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the colored glass articles may be formed by first melting a glass composition comprising a combination of constituent glass components as described herein and one or more colorants in a colorant package. Thereafter, the molten glass is formed into a precursor glass article using conventional forming techniques and, thereafter, cooled. The precursor glass article may take on any number of forms including, without limitation, sheets, tubes, rods, containers (e.g., vials, bottles, jars, etc.) or the like. In embodiments, the precursor glass article may be exposed to a heat treatment to produce color in the glass. For example and without limitation, the heat treatment may induce the formation of colorant particles in the glass which, in turn, cause the glass to become colored. In some embodiments, the glass may appear clear (i.e., colorless) prior to heat treatment. Examples of colorant particles may include, for example and without limitation, Au particles (such as when the colorant package in the glass comprises Au), randomly oriented, anisotropic silver particles (such as when the colorant package comprises Ag) and/or the like, thereby forming a colored glass article. The time and/or temperature of the heat treatment may be specifically selected to produce a colored glass article having a desired color. Without wishing to be bound by theory, it is believed that a desired color is a result of the morphology of the particles precipitated in the glass which, in turn, is dependent on the time and/or temperature of the heat treatment. Accordingly, it should be understood that a single glass composition can be used to form colored glass articles having different colors based on the time and/or temperature of the applied heat treatment in addition to the composition of the colorant package included in the glass.

Specifically, different color coordinates within the color gamut may be achieved by altering the heat treatment cycle of the glass composition used to produce the resultant colored glass articles. The heat treatment cycle is characterized by the temperature of the environment (i.e., the oven) and the duration of the cycle (i.e., the time exposed to the heated environment). As used herein, the phrase “temperature of the heat treatment cycle” refers to the temperature of the environment (i.e., the oven). In embodiments, glass articles formed from the glass compositions described herein are heat treated in an isothermal oven to produce the resultant colored glass articles.

In embodiments, the temperature of the heat treatment cycle is greater than or equal to 500° C., greater than or equal to 550° C., greater than or equal to 575° C., greater than or equal to 600° C., greater than or equal to 625° C., or even greater than or equal to 650° C. In embodiments, the temperature of the heat treatment cycle is less than or equal to 800° C., less than or equal to 775° C., less than or equal to 750° C., less than or equal to 725° C., or even less than or equal to 700° C. In embodiments, the temperature of the heat treatment cycle is greater than or equal to 500° C. and less than or equal to 800° C., greater than or equal to 500° C. and less than or equal to 775° C., greater than or equal to 500° C. and less than or equal to 750° C., greater than or equal to 500° C. and less than or equal to 725° C., greater than or equal to 550° C. and less than or equal to 700° C., greater than or equal to 550° C. and less than or equal to 800° C., greater than or equal to 550° C. and less than or equal to 775° C., greater than or equal to 550° C. and less than or equal to 750° C., greater than or equal to 550° C. and less than or equal to 725° C., greater than or equal to 550° C. and less than or equal to 700° C., greater than or equal to 575° C. and less than or equal to 800° C., greater than or equal to 575° C. and less than or equal to 775° C., greater than or equal to 575° C. and less than or equal to 750° C., greater than or equal to 575° C. and less than or equal to 725° C., greater than or equal to 575° C. and less than or equal to 700° C., greater than or equal to 600° C. and less than or equal to 800° C., greater than or equal to 600° C. and less than or equal to 775° C., greater than or equal to 600° C. and less than or equal to 750° C., greater than or equal to 600° C. and less than or equal to 725° C., greater than or equal to 600° C. and less than or equal to 700° C., greater than or equal to 625° C. and less than or equal to 800° C., greater than or equal to 625° C. and less than or equal to 775° C., greater than or equal to 625° C. and less than or equal to 750° C., greater than or equal to 625° C. and less than or equal to 725° C., greater than or equal to 625° C. and less than or equal to 700° C., greater than or equal to 650° C. and less than or equal to 800° C., greater than or equal to 650° C. and less than or equal to 775° C., greater than or equal to 650° C. and less than or equal to 750° C., greater than or equal to 650° C. and less than or equal to 725° C., or even greater than or equal to 650° C. and less than or equal to 700° C., or any and all sub-ranges formed from any of these endpoints.

In embodiments, the duration of the heat treatment cycle is greater than or equal to 0.15 hour, greater than or equal to 0.25 hour, greater than or equal to 0.5 hour, greater than or equal 1 hour, or even greater than or equal to 2 hours. In embodiments, the durations of the heat treatment cycle is less than or equal to 24 hours, less than or equal to 16 hours, less than or equal to 8 hours, less than or equal to 6 hours, less than or equal to 4 hours, or even less than or equal to 3 hours. In embodiments, the duration of the heat treatment cycle is greater than or equal to 0.25 hour and less than or equal to 24 hours, greater than or equal to 0.25 hour and less than or equal to 16 hours, greater than or equal to 0.25 hour and less than or equal to 8 hours, greater than or equal to 0.25 hour and less than or equal to 4 hours, greater than or equal to 0.5 hour and less than or equal to 24 hours, greater than or equal to 0.5 hour and less than or equal to 16 hours, greater than or equal to 0.5 hour and less than or equal to 8 hours, greater than or equal to 0.5 hour and less than or equal to 4 hours, greater than or equal to 1 hour and less than or equal to 24 hours, greater than or equal to 1 hour and less than or equal to 16 hours, greater than or equal to 1 hour and less than or equal to 8 hours, greater than or equal to 1 hour and less than or equal to 4 hours, greater than or equal to 2 hours and less than or equal to 24 hours, greater than or equal to 2 hours and less than or equal to 16 hours, greater than or equal to 2 hours and less than or equal to 8 hours, or even greater than or equal to 2 hours and less than or equal to 4 hours, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the heat treatment may comprise ramping up to a heat treatment temperature at a heating rate and cooling down from the heat treatment temperature at a cooling rate. In embodiments, the selected heating rate and cooling rate may effect the color coordinates of the resultant colored glass articles.

In embodiments, the heating rate of the heat treatment may be greater than or equal to 2° C./min or even greater than or equal to 3° C./min. In embodiments, the heating rate of the heat treatment may be less than equal to 10° C./min, less than or equal to 7° C./min, or even less than or equal to 5° C./min. In embodiments, the heating rate of the heat treatment may be greater than or equal to 2° C./min and less than or equal to 10° C./min, greater than or equal to 2° C./min and less than or equal to 7° C./min, greater than or equal to 2° C./min and less than or equal to 5° C./min, greater than or equal to 3° C./min and less than or equal to 10° C./min, greater than or equal to 3° C./min and less than or equal to 7° C./min, or even greater than or equal to 3° C./min and less than or equal to 5° C./min, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the cooling rate of the heat treatment may be greater than or equal to 1° C./min or even greater than or equal to 2° C./min. In embodiments, the cooling rate of the heat treatment may be less than or equal to 10° C./min, less than or equal to 8° C./min, less than or equal to 6° C./min, or even less than or equal to 4° C./min. In embodiments, the cooling rate of the heat treatment may be greater than or equal to 1° C./min and less than or equal to 10° C./min, greater than or equal to 1° C./min and less than or equal to 8° C./min, greater than or equal to 1° C./min and less than or equal to 6° C./min, greater than or equal to 1° C./min and less than or equal to 4° C./min, greater than or equal to 2° C./min and less than or equal to 10° C./min, greater than or equal to 2° C./min and less than or equal to 8° C./min, greater than or equal to 2° C./min and less than or equal to 6° C./min, or even greater than or equal to 2° C./min and less than or equal to 4° C./min, or any and all sub-ranges formed from any of these endpoints.

For example and without limitation, in embodiments in which the glass composition comprises Ag, colored glass articles having an orange color may be formed by heat treating the precursor glass article at a heat treatment temperature from about 590° C. to about 610° C. for a heat treatment time from about 45 minutes to about 180 minutes.

For example and without limitation, in embodiments in which the glass composition comprises Ag, colored glass articles having a red color may be formed by heat treating the precursor glass article at a heat treatment temperature from about 600° C. to about 615° C. for a heat treatment time from about 180 minutes to about 300 minutes.

For example and without limitation, in embodiments in which the glass composition comprises Ag, colored glass articles having a green color may be formed by heat treating the precursor glass article at a heat treatment temperature from about 620° C. to about 640° C. for a heat treatment time from about 20 minutes to about 40 minutes.

For example and without limitation, in embodiments in which the glass composition comprises Ag, colored glass articles having a brown color may be formed by heat treating the precursor glass article at a heat treatment temperature from about 640° C. to about 660° C. for a heat treatment time from about 30 minutes to about 90 minutes.

For example and without limitation, in embodiments in which the glass composition comprises Ag, colored glass articles having a purple color may be formed by heat treating the precursor glass article at a heat treatment temperature from about 625° C. to about 650° C. for a heat treatment time from about 30 minutes to about 90 minutes.

While some embodiments of the glasses described herein require a heat treatment to impart color to the glass, it is noted that other embodiments of glasses described herein do not require a heat treatment to impart color to the glass. For example, some glasses containing transition metal oxides and/or rare earth oxides may not require a heat treatment to impart color to the glass. As such, it should be understood that the heat treatment is optional.

Following heat treatment (if required), the glasses described herein are colored and, as such, are referred to as colored glass articles. In embodiments, the colored glass articles are predominantly glass (i.e., predominantly non-crystalline), but may include particles (such as colorant particles) that have crystalline morphology. As such, the colored glass articles may include at least one crystalline phase. In embodiments, the crystalline phase may be, for example and without limitation, an Au crystalline phase and/or a Ag crystalline phase. However, it should be understood that other crystalline phases are possible and may be present as an alternative to an Au crystalline phase and/or an Ag crystalline phase or instead of an Au crystalline phase and/or an Ag crystalline phase. In embodiments, the crystallinity of the colored glass article is less than or equal to 10 wt. %, less than or equal to 9 wt. %, less than or equal to 8 wt. %, less than or equal to 7 wt. %, less than or equal to 6 wt. %, less than or equal to 5 wt. %, less than or equal to 4 wt. %, less than or equal to 3 wt. %, less than or equal to 2 wt. %, or even less than or equal to 1 wt. % by weight of the glass article.

In embodiments, the colored glass articles may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 20 and less than or equal to 96.5. In embodiments, the colored glass articles may have a transmittance color coordinate in the CIELAB color space of absolute value of a* (i.e., |a*|) greater than or equal to 0.3. In embodiments, the colored glass articles may have a transmittance color coordinate in the CIELAB color space of absolute value of b* (i.e., |b*|) greater than or equal to 0.5. In embodiments, the colored glass articles may have a transmittance color coordinate in the CIELAB color space of: L* greater than or equal to 20 and less than or equal to 96.5; absolute value of a* (i.e., |a*|) greater than or equal to 0.3; and absolute value of b* (i.e., |b*|) greater than or equal to 0.5. In these embodiments, L* may be greater than or equal to 25, greater than or equal to 30, greater than or equal to 35, greater than or equal to 40, greater than or equal to 45, greater than or equal to 50, or even greater than or equal to 55. As noted herein, unless otherwise specified, the transmittance color coordinates in the CIELAB color space are specified for article thicknesses of 0.4 to 5 mm (inclusive of endpoints) under F2 illumination and a 10° standard observer angle.

Without wishing to be bound by theory, it is believed that glasses having CIELAB color coordinates within the range of L* greater than or equal to 20 and less than or equal to 96.5 are transparent to wavelengths of visible light (i.e., wavelengths of light from 380 nm to 750 nm, inclusive of endpoints) rather than opaque. However, as the value of L* decreases, the color of the colored glass articles becomes more saturated and the glasses become more opaque (i.e., less transparent). As the value for L* increases, the color of the colored glass articles becomes less saturated and, when the L* value exceeds 96.5, the colored glass article may appear colorless.

In embodiments, the colored glass articles may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −5 and less than or equal to 25 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to −20 and less than or equal to 5 (exclusive of b* greater than −0.5 and less than 0.5).

In embodiments, the colored glass articles may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −10 and less than or equal to 25 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to −20 and less than or equal to 5 (exclusive of b* greater than −0.5 and less than 0.5).

In embodiments, the colored glass articles may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −18 and less than or equal to 0.3, and b* greater than or equal to 0.5 and less than or equal to 82.

In embodiments, the colored glass articles may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −18 and less than or equal to 18 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to 0.5 and less than or equal to 82.

In embodiments, the colored glass articles may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −20 and less than or equal to 60 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to −90 and less than or equal to 85 (exclusive of b* greater than −0.5 and less than 0.5).

In embodiments, the colored glass articles may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −35 and less than or equal to −0.3, and b* greater than or equal to 0.5 and less than or equal to 82.

In embodiments, the colored glass articles may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −35 and less than or equal to 20 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to 0.5 and less than or equal to 75.

In embodiments, the colored glass articles may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −15 and less than or equal to 65 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to −90 and less than or equal to 80 (exclusive of b* greater than −0.5 and less than 0.5).

In embodiments, the colored glass articles may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −35 and less than or equal to 60 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to −90 and less than or equal to 80 (exclusive of b* greater than −0.5 and less than 0.5).

In embodiments, the colored glass articles may have a transmitted color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −11.12 and less than or equal to 60 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to −20 and less than or equal to 120 (exclusive of b* greater than −0.5 and less than 0.5).

In embodiments, the transmitted color coordinates of the CIELAB color space may be described in terms of a range of L* values and a region of the a* (horizontal axis or x-axis) and b* (vertical axis or y-axis) color space. The region of the a* vs. b* color space may be defined by the intersection of a plurality of lines defined by a* and b*.

In embodiments, colored glass articles that appear yellow in color may have a transmitted color coordinate in the CIELAB color space of L* greater than or equal to 20 and less than or equal to 90 and a* and b* values within a region of the a* vs. b* color space bound by the intersection of the lines: b*=0.2879·a*+27.818; b*=7.0833·a*−94.5; b*=0.45·a*+104.5; and b*=15.3·a*+253. This region is graphically depicted in FIG. 20 as the region being bound by lines A, B, C, and D.

In embodiments, colored glass articles that appear orange in color may have a transmitted color coordinate in the CIELAB color space of L* greater than or equal to 20 and less than or equal to 90 and a* and b* values within a region of the a* vs. b* color space bound by the intersection of the lines: b*=7.0833·a*−94.5; b*=−0.9583·a*+146.75; b*=2.6957·a*−50.565; and b*=33. This region is graphically depicted in FIG. 20 as the region being bound by lines B, E, F and G.

In embodiments, colored glass articles that appear red in color may have a transmitted color coordinate in the CIELAB color space of L* greater than or equal to 20 and less than or equal to 90 and a* and b* values within a region of the a* vs. b* color space bound by the intersection of the lines: b*=2.6957·a*−50.565; a*=54; b*=1.0769·a*−17.154; and b*=6.6667·a*−173.67. This region is graphically depicted in FIG. 20 as the region being bound by lines F, H, I and J.

In embodiments, colored glass articles that appear green in color may have a transmitted color coordinate in the CIELAB color space of L* greater than or equal to 4 and less than or equal to 80 and a* and b* values within a region of the a* vs. b* color space bound by the intersection of the lines: b*=0.2879·a*+27.818; a*=0; b*=−1.375·a*+1; and b*=9.333·a*+86.667, exclusive of a* greater than −0.3 and less than 0.3 and exclusive of b* greater than −0.5 and less than 0.5. This region is graphically depicted in FIG. 20 as the region being bound by lines A, K, L, and M.

In embodiments, colored glass articles that appear pink/purple in color may have a transmitted color coordinate in the CIELAB color space of L* greater than or equal to 10 and less than or equal to 80 and a* and b* values within a region of the a* vs. b* color space bound by the intersection of the lines: b*=0.0833·a*+20.833; b*=2.1182·a*−32.073; b*=−0.3; and b*=1.5929·a*−0.3, exclusive of a* greater than −0.3 and less than 0.3 and exclusive of b* greater than −0.5 and less than 0.5. This region is graphically depicted in FIG. 20 as the region being bound by lines N, O, P and Q.

In embodiments, colored glass articles may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −15 and less than or equal to −0.3, and b* greater than or equal to −10 and less than or equal to 10 (exclusive of b* greater than −0.5 and less than 0.5).

In embodiments, colored glass articles may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 85 and less than or equal to 96.5, a* greater than or equal to −10 and less than −0.3, and b* greater than or equal to −5 and less than or equal to 5 (exclusive of b* greater than −0.5 and less than 0.5).

In embodiments of the colored glass articles described herein in which the colorant package includes Au, the concentrations of R₂O and Al₂O₃may be adjusted such that the difference R₂O—Al₂O₃, in combination with Au, produces colored glass articles having the desired color (e.g., pink, purple, red, orange, etc.). In embodiments, the colored glass article may have a transmittance color coordinate in the CIELAB color space of: L* greater than or equal to 55 and less than or equal to 96.5; a* greater than or equal to −15 and less than or equal to 25; and b* greater than or equal to −25 and less than or equal to 25, exclusive of a* greater than −0.3 and less than 0.3 and exclusive of b* greater than −0.5 and less than 0.5.

In embodiments where the colorant package comprises Au, relatively smaller concentrations of R₂O—Al₂O₃(e.g., less than or equal to 1.5 mol %) may result in a blue or purple glass article. Relatively higher concentrations of R₂O—Al₂O₃(e.g., greater than 1.5 mol %) may result in an orange or red glass article.

For example, in embodiments in which the colorant package includes Au, R₂O—Al₂O₃may be greater than or equal to −5 mol % and less than or equal to 1.5 mol % and b* may be greater than or equal to −25 and less than or equal to 10, exclusive of b* greater than −0.5 and less than 0.5. In embodiments, R₂O—Al₂O₃may greater than or equal to −3 mol % and less than or equal to 1.5 mol % and b* may be greater than or equal to −15 and less than or equal to 7, exclusive of b* greater than −0.5 and less than 0.5. In embodiments, R₂O—Al₂O₃may be greater than or equal to −5 mol % and less than or equal to 1.5 mol %, greater than or equal to −3 mol % and less than or equal to 1.5 mol %, greater than or equal to −1 mol % and less than or equal to 1.5 mol %, or even greater than or equal to 0 mol % and less than or equal to 1.5 mol %, or any and all sub-ranges formed from any of these endpoints; and b* may be greater than or equal to −25 and less than or equal to 10 (exclusive of b* greater than −0.5 and less than 0.5), greater than or equal to −25 and less than or equal to 7, greater than or equal to −25 and less than or equal to 5 (exclusive of b* greater than −0.5 and less than 0.5), greater than or equal to −15 and less than or equal to 10 (exclusive of b* greater than −0.5 and less than 0.5), greater than or equal to −15 and less than or equal to 7 (exclusive of b* greater than −0.5 and less than 0.5), greater than or equal to −15 and less than or equal to 5 (exclusive of b* greater than −0.5 and less than 0.5), greater than or equal to −10 and less than or equal to 10 (exclusive of b* greater than −0.5 and less than 0.5), greater than or equal to −10 and less than or equal to 7 (exclusive of b* greater than −0.5 and less than 0.5), or even greater than or equal to −10 and less than or equal to 5 (exclusive of b* greater than −0.5 and less than 0.5), or any and all sub-ranges formed from any of these endpoints.

In embodiments in which the colorant package includes Au, R₂O—Al₂O₃may be greater than 1.5 mol % and less than or equal to 7 mol % and b* may be greater than or equal to 0.5 and less than or equal to 25. In embodiments, R₂O—Al₂O₃may be greater than 1.5 mol % and less than or equal to 5 mol % and b* may be greater than or equal to 0.5 and less than or equal to 15. In embodiments, R₂O—Al₂O₃may be greater than 1.5 mol % and less than or equal to 7 mol %, greater than 1.5 mol % and less than or equal to 5 mol %, or even greater than 1.5 mol % and less than or equal to 3 mol %, or any and all sub-ranges formed from any of these endpoints; and b* may be greater than or equal to 0.5 and less than or equal to 25, greater than or equal to 0.5 and less than or equal to 15, greater than or equal to 0.5 and less than or equal to 10, greater than or equal to 2.5 and less than or equal to 25, greater than or equal to 2.5 and less than or equal to 15, greater than or equal to 2.5 and less than or equal to 10, greater than or equal to 5 and less than or equal to 25, greater than or equal to 5 and less than or equal to 15, or even greater than or equal to 5 and less than or equal to 10, or any and all sub-ranges formed from any of these endpoints.

In embodiments, the colored glass articles including Au as a colorant may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −5 and less than or equal to 25 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to −20 and less than or equal to 5 (exclusive of b* greater than −0.5 and less than 0.5).

In embodiments, the colored glass articles including Au as a colorant may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −10 and less than or equal to 25 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to −20 and less than or equal to 5 (exclusive of b* greater than −0.5 and less than 0.5).

In embodiments, the colored glass articles including Cr₂O₃as a colorant may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −18 and less than or equal to 0.3, and b* greater than or equal to 0.5 and less than or equal to 82.

In embodiments, the colored glass articles including Cr₂O₃and NiO as a colorant may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −18 and less than or equal to 18 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to 0.5 and less than or equal to 82.

In embodiments, the colored glass articles including Cr₂O₃and Co₃O₄as a colorant may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −20 and less than or equal to 60 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to −90 and less than or equal to 85 (exclusive of b* greater than −0.5 and less than 0.5).

In embodiments, the colored glass articles including Cr₂O₃and CuO as a colorant may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −35 and less than or equal to −0.3, and b* greater than or equal to 0.5 and less than or equal to 82.

In embodiments, the colored glass articles including Cr₂O₃, NiO, and CuO as a colorant may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −35 and less than or equal to 20 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to 0.5 and less than or equal to 75.

In embodiments, the colored glass articles including Cr₂O₃, NiO, and Co₃O₄as a colorant may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −15 and less than or equal to 65 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to −90 and less than or equal to 80 (exclusive of b* greater than −0.5 and less than 0.5).

In embodiments, the colored glass articles including Cr₂O₃, CuO, and Co₃O₄as a colorant may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −35 and less than or equal to 60 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to −90 and less than or equal to 80 (exclusive of b* greater than −0.5 and less than 0.5).

In embodiments, the colored glass articles including Cr₂O₃, NiO, CuO, and Co₃O₄as a colorant may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −35 and less than or equal to 60 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to −90 and less than or equal to 80 (exclusive of b* greater than −0.5 and less than 0.5).

In embodiments, the colored glass articles including Ag as a colorant may have a transmitted color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −11.12 and less than or equal to 60 (exclusive of a* greater than −0.3 and less than 0.3), and b* greater than or equal to −20 and less than or equal to 120 (exclusive of b* greater than −0.5 and less than 0.5).

For example, in embodiments, colored glass articles comprising Ag as a colorant that appear yellow in color may have a transmitted color coordinate in the CIELAB color space of L* greater than or equal to 20 and less than or equal to 90 and a* and b* values within a region of the a* vs. b* color space bound by the intersection of the lines: b*=0.2879·a*+27.818; b*=7.0833·a*−94.5; b*=0.45·a*+104.5; and b*=15.3·a*+253. This region is graphically depicted in FIG. 20 as the region being bound by lines A, B, C, and D.

In embodiments, colored glass articles comprising Ag as a colorant that appear orange in color may have a transmitted color coordinate in the CIELAB color space of L* greater than or equal to 20 and less than or equal to 90 and a* and b* values within a region of the a* vs. b* color space bound by the intersection of the lines: b*=7.0833·a*−94.5; b*=−0.9583·a*+146.75; b*=2.6957·a*−50.565; and b*=33. This region is graphically depicted in FIG. 20 as the region being bound by lines B, E, F and G.

In embodiments, colored glass articles comprising Ag as a colorant that appear red in color may have a transmitted color coordinate in the CIELAB color space of L* greater than or equal to 20 and less than or equal to 90 and a* and b* values within a region of the a* vs. b* color space bound by the intersection of the lines: b*=2.6957·a*−50.565; a*=54; b*=1.0769·a*−17.154; and b*=6.6667·a*−173.67. This region is graphically depicted in FIG. 20 as the region being bound by lines F, H, I and J.

In embodiments, colored glass articles comprising Ag as a colorant that appear green in color may have a transmitted color coordinate in the CIELAB color space of L* greater than or equal to 4 and less than or equal to 80 and a* and b* values within a region of the a* vs. b* color space bound by the intersection of the lines: b*=0.2879·a*+27.818; a*=0; b*=−1.375·a*+1; and b*=9.333·a*+86.667, exclusive of a* greater than −0.3 and less than 0.3 and exclusive of b* greater than −0.5 and less than 0.5. This region is graphically depicted in FIG. 20 as the region being bound by lines A, K, L, and M.

In embodiments, colored glass articles comprising Ag as a colorant that appear pink/purple in color may have a transmitted color coordinate in the CIELAB color space of L* greater than or equal to 10 and less than or equal to 80 and a* and b* values within a region of the a* vs. b* color space bound by the intersection of the lines: b*=0.0833·a*+20.833; b*=2.1182·a*−32.073; b*=−0.3; and b*=1.5929·a*−0.3, exclusive of a* greater than −0.3 and less than 0.3 and exclusive of b* greater than −0.5 and less than 0.5. This region is graphically depicted in FIG. 20 as the region being bound by lines N, O, P and Q.

In embodiments, colored glass articles that include a transition metal oxides and/or rare earth metal oxides as a colorant (such as NiO, CuO, TiO₂, Co₃O₄, Cr₂O₃, and/or CeO₂) may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −15 and less than or equal to −0.3, and b* greater than or equal to −10 and less than or equal to 10 (exclusive of b* greater than −0.5 and less than 0.5).

In embodiments, colored glass articles that include a transition metal oxides and/or rare earth metal oxides as a colorant (such as NiO, CuO, TiO₂, Co₃O₄, Cr₂O₃, and/or CeO₂) may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 85 and less than or equal to 96.5, a* greater than or equal to −10 and less than −0.3, and b* greater than or equal to −5 and less than or equal to 5 (exclusive of b* greater than −0.5 and less than 0.5).

In some embodiments, the colored glass articles have an average transmittance of greater than or equal to 10% and less than or equal to 92% of light over the wavelength range from 380 nm to 750 nm. As noted herein, unless otherwise specified, the average transmittance is indicated for article thicknesses of 0.4 to 5 mm, inclusive of endpoints. In embodiments, the colored glass articles have an average transmittance greater than or equal to 15% and less than or equal to 92% over the wavelength range of 380 nm to 750 nm. In embodiments, the colored glass articles have an average transmittance greater than or equal to 20% and less than or equal to 92% for light over the wavelength range of 380 nm to 750 nm. In embodiments, the colored glass articles have an average transmittance greater than or equal to 25% and less than or equal to 92% for light over the wavelength range of 380 nm to 750 nm. In embodiments, the colored glass articles have an average transmittance greater than or equal to 30% and less than or equal to 92% for light over the wavelength range of 380 nm to 750 nm. In embodiments, the colored glass articles have an average transmittance greater than or equal to 19% and less than or equal to 88% over the wavelength range of 380 nm to 750 nm. In embodiments, the colored glass articles have an average transmittance greater than or equal to 15% and less than or equal to 88% over the wavelength range of 380 nm to 750 nm. In embodiments, the colored glass articles have an average transmittance greater than or equal to 20% and less than or equal to 88% for light over the wavelength range of 380 nm to 750 nm. In embodiments, the colored glass articles have an average transmittance greater than or equal to 25% and less than or equal to 88% for light over the wavelength range of 380 nm to 750 nm. In embodiments, the colored glass articles have an average transmittance greater than or equal to 30% and less than or equal to 88% for light over the wavelength range of 380 nm to 750 nm.

In embodiments, the colored glass articles described herein may have a dielectric constant Dk at 10 GHz of less than or equal to 6.4, such as less than or equal to 6.4 and greater than or equal to 5.6. In embodiments, the dielectric constant of the colored glass article may be less than or equal to 6.4 and greater than or equal to 5.7, less than or equal to 6.4 and greater than or equal to 5.8, less than or equal to 6.4 and greater than or equal to 5.9, less than or equal to 6.4 and greater than or equal to 6.0, less than or equal to 6.4 and greater than or equal to 6.2, less than or equal to 6.3 and greater than or equal to 5.6, less than or equal to 6.3 and greater than or equal to 5.7, less than or equal to 6.3 and greater than or equal to 5.8, less than or equal to 6.3 and greater than or equal to 5.9, less than or equal to 6.3 and greater than or equal to 6.0, less than or equal to 6.3 and greater than or equal to 6.2, less than or equal to 6.2 and greater than or equal to 5.7, less than or equal to 6.2 and greater than or equal to 5.8, less than or equal to 6.2 and greater than or equal to 5.9, less than or equal to 6.2 and greater than or equal to 6.0, or even less than or equal to 6.2 and greater than or equal to 6.1. As noted herein, while not wishing to be bound by theory, it is believed that the dielectric constant of the colored glass articles measured at 10 GHz approximates the dielectric constant at each frequency in the range from 10 GHz to 60 GHz. Accordingly, a dielectric constant reported for a colored glass article at a frequency of 10 GHz approximates the dielectric constant of the colored glass article at each frequency over the frequency range of 10 GHz to 60 GHz, inclusive of endpoints.

The colored glass articles formed from the glass compositions described herein may be any suitable thickness, which may vary depending on the particular application of the colored glass article. In embodiments, the colored glass articles may have a thickness greater than or equal to 200 μm and less than or equal to 6 mm, greater than or equal to 200 μm and less than or equal to 4 mm, greater than or equal to 200 μm and less than or equal to 2 mm, greater than or equal to 200 μm and less than or equal to 1 mm, greater than or equal to 200 μm and less than or equal to 750 μm, greater than or equal to 200 μm and less than or equal to 650 μm, greater than or equal to 200 μm and less than or equal to 600 μm, greater than or equal to 200 μm and less than or equal to 550 μm, greater than or equal to 200 μm and less than or equal to 500 μm, greater than or equal to 250 μm and less than or equal to 6 mm, greater than or equal to 250 μm and less than or equal to 4 mm, greater than or equal to 250 μm and less than or equal to 2 mm, greater than or equal to 250 μm and less than or equal to 1 mm, greater than or equal to 250 μm and less than or equal to 750 μm, greater than or equal to 250 μm and less than or equal to 650 μm, greater than or equal to 250 μm and less than or equal to 600 μm, greater than or equal to 250 μm and less than or equal to 550 μm, greater than or equal to 250 μm and less than or equal to 500 μm, greater than or equal to 300 μm and less than or equal to 6 mm, greater than or equal to 300 μm and less than or equal to 4 mm, greater than or equal to 300 μm and less than or equal to 2 mm, greater than or equal to 300 μm and less than or equal to 1 mm, greater than or equal to 300 μm and less than or equal to 750 μm, greater than or equal to 300 μm and less than or equal to 650 μm, greater than or equal to 300 μm and less than or equal to 600 μm, greater than or equal to 300 μm and less than or equal to 550 μm, greater than or equal to 300 μm and less than or equal to 500 μm, greater than or equal to 350 μm and less than or equal to 6 mm, greater than or equal to 350 μm and less than or equal to 4 mm, greater than or equal to 350 μm and less than or equal to 2 mm, greater than or equal to 350 μm and less than or equal to 1 mm, greater than or equal to 350 μm and less than or equal to 750 μm, greater than or equal to 350 μm and less than or equal to 650 μm, greater than or equal to 350 μm and less than or equal to 600 μm, greater than or equal to 350 μm and less than or equal to 550 μm, greater than or equal to 350 μm and less than or equal to 500 μm, greater than or equal to 400 μm and less than or equal to 6 mm, greater than or equal to 400 μm and less than or equal to 4 mm, greater than or equal to 400 μm and less than or equal to 2 mm, greater than or equal to 400 μm and less than or equal to 1 mm, greater than or equal to 400 μm and less than or equal to 750 μm, greater than or equal to 400 μm and less than or equal to 650 μm, greater than or equal to 400 μm and less than or equal to 600 μm, greater than or equal to 400 μm and less than or equal to 550 μm, greater than or equal to 400 μm and less than or equal to 500 μm, greater than or equal to 450 μm and less than or equal to 6 mm, greater than or equal to 450 μm and less than or equal to 4 mm, greater than or equal to 450 μm and less than or equal to 2 mm, greater than or equal to 450 μm and less than or equal to 1 mm, greater than or equal to 450 μm and less than or equal to 750 μm, greater than or equal to 450 μm and less than or equal to 650 μm, greater than or equal to 450 μm and less than or equal to 600 μm, greater than or equal to 450 μm and less than or equal to 550 μm, greater than or equal to 450 μm and less than or equal to 500 μm, greater than or equal to 500 μm and less than or equal to 6 mm, greater than or equal to 500 μm and less than or equal to 4 mm, greater than or equal to 500 μm and less than or equal to 2 mm, greater than or equal to 500 μm and less than or equal to 1 mm, greater than or equal to 500 μm and less than or equal to 750 μm, greater than or equal to 750 μm and less than or equal to 6 mm, greater than or equal to 750 μm and less than or equal to 4 mm, greater than or equal to 750 μm and less than or equal to 2 mm, greater than or equal to 750 μm and less than or equal to 1 mm, greater than or equal to 1 mm and less than or equal to 6 mm, greater than or equal to 1 mm and less than or equal to 4 mm, greater than or equal to 1 mm and less than or equal to 2 mm, greater than or equal to 2 mm and less than or equal to 6 mm, greater than or equal to 2 mm and less than or equal to 4 mm, or even greater than or equal to 4 mm and less than or equal to 6 mm, or any and all sub-ranges formed from any of these endpoints.

As discussed hereinabove, colored glass articles formed from the glass compositions described herein may have an increased fracture toughness such that the colored glass articles are more resistant to damage. In embodiments, the colored glass article may have a K_ICfracture toughness as measured by a CNSB method, prior to ion exchange, greater than or equal to 0.7 MPa·m^1/2. In embodiments, the colored glass article may have a K_ICfracture toughness, prior to ion exchange as measured by a CNSB method greater than or equal to 0.7 MPa·m^1/2, greater than or equal to 0.8 MPa·m^1/2, greater than or equal to 0.9 MPa·m^1/2, or even greater than or equal to 1.0 MPa·m^1/2.

As discussed hereinabove, colored glass articles formed from the glass compositions described herein may have an increased fracture toughness such that the colored glass articles are more resistant to damage. In embodiments, the colored glass article may have a K_ICfracture toughness as measured by a DCB method, prior to ion exchange, greater than or equal to 0.7 MPa·m^1/2. In embodiments, the colored glass article may have a K_ICfracture toughness, prior to ion exchange as measured by a DCB method greater than or equal to 0.7 MPa·m^1/2, greater than or equal to 0.8 MPa·m^1/2, greater than or equal to 0.9 MPa·m^1/2, or even greater than or equal to 1.0 MPa·m^1/2.

In embodiments, the glass compositions described herein are ion-exchangeable to facilitate strengthening the colored glass articles made from the glass compositions. In typical ion-exchange processes, smaller metal ions in the glass compositions are replaced or “exchanged” with larger metal ions of the same valence within a layer that is close to the outer surface of the colored glass article made from the glass composition. The replacement of smaller ions with larger ions creates a compressive stress within the layer of the colored glass article made from the glass composition. In embodiments, the metal ions are monovalent metal ions (e.g., Li⁺, Na⁺, K⁺, and the like), and ion-exchange is accomplished by immersing the glass article made from the glass composition in a bath comprising at least one molten salt of the larger metal ion that is to replace the smaller metal ion in the colored glass article. Alternatively, other monovalent ions such as Ag⁺, Tl⁺, Cu⁺, and the like may be exchanged for monovalent ions. The ion-exchange process or processes that are used to strengthen the colored glass article made from the glass composition may include contacting the colored glass article with an ion-exchange medium. In embodiments, the ion-exchange medium may be a molten salt bath. For example, the ion-exchange process may include, but is not limited to, immersion in a single bath or multiple baths of like or different compositions with optional washing and/or annealing steps between immersions.

Upon exposure to the colored glass article, the ion-exchange solution (e.g., KNO₃and/or NaNO₃molten salt bath) may, according to embodiments, be at a temperature greater than or equal to 350° C. and less than or equal to 500° C., greater than or equal to 360° C. and less than or equal to 450° C., greater than or equal to 370° C. and less than or equal to 440° C., greater than or equal to 360° C. and less than or equal to 420° C., greater than or equal to 370° C. and less than or equal to 400° C., greater than or equal to 375° C. and less than or equal to 475° C., greater than or equal to 400° C. and less than or equal to 500° C., greater than or equal to 410° C. and less than or equal to 490° C., greater than or equal to 420° C. and less than or equal to 480° C., greater than or equal to 430° C. and less than or equal to 470° C., or even greater than or equal to 440° C. and less than or equal to 460° C., or any and all sub-ranges between the foregoing values. In embodiments, the colored glass article may be exposed to the ion-exchange solution for a duration greater than or equal to 2 hours and less than or equal to 24 hours, greater than or equal to 2 hours and less than or equal to 12 hours, greater than or equal to 2 hours and less than or equal to 6 hours, greater than or equal to 8 hours and less than or equal to 24 hours, greater than or equal to 6 hours and less than or equal to 24 hours, greater than or equal to 6 hours and less than or equal to 12 hours, greater than or equal to 8 hours and less than or equal to 24 hours, or even greater than or equal to 8 hours and less than or equal to 12 hours, or any and all sub-ranges formed from any of these endpoints.

In embodiments, a colored glass article made from a glass composition may be ion-exchanged to achieve a depth of compression of 10 μm or greater, 20 μm or greater, 30 μm or greater, 40 μm or greater, 50 μm or greater, 60 μm or greater, 70 μm or greater, 80 μm or greater, 90 μm or greater, or 100 μm or greater. In embodiments, the colored glass article made from the glass composition may have a thickness “t” and may be ion-exchanged to achieve a depth of compression greater than or equal to 0.15t, greater than or equal to 0.17t, or even greater than or equal to 0.2t. In embodiments, the colored glass article made from the glass composition may have a thickness “t” and may be ion-exchanged to achieve a depth of compression less than or equal to 0.3t, less than or equal to 0.27t, or even less than or equal to 0.25t. In embodiments, the colored glass article made from the glass composition described herein may have a thickness “t” and may be ion-exchanged to achieve a depth of compression greater than or equal to 0.15t and less than or equal to 0.3t, greater than or equal to 0.15t and less than or equal to 0.27t, greater than or equal to 0.15t and less than or equal to 0.25t, greater than or equal to 0.17t and less than or equal to 0.3t, greater than or equal to 0.17t and less than or equal to 0.27t, greater than or equal to 0.17t and less than or equal to 0.25t, greater than or equal to 0.2t and less than or equal to 0.3t, greater than or equal to 0.2t and less than or equal to 0.27t, or even greater than or equal to 0.2t and less than or equal to 0.25t, or any and all sub-ranges formed from any of these endpoints.

The development of this surface compression layer is beneficial for achieving a better crack resistance and higher flexural strength compared to non-ion-exchanged materials. The surface compression layer has a higher concentration of the ions exchanged into the colored glass article in comparison to the concentration of the ions exchanged into the colored glass article for the body (i.e., the area not including the surface compression) of the colored glass article. In embodiments, the colored glass article made from the glass composition may have a surface compressive stress after ion-exchange strengthening greater than or equal to 300 MPa, greater than or equal to 400 MPa, greater than or equal to 500 MPa, or even greater than or equal to 600 MPa. In embodiments, the colored glass article made from the glass composition may have a surface compressive stress after ion-exchange strengthening less than or equal to 1 GPa, less than or equal to 900 MPa, or even less than or equal to 800 MPa. In embodiments, the colored glass article made from the glass composition may have a surface compressive stress after ion-exchange strengthening greater than or equal to 300 MPa and less than or equal to 1 GPa, greater than or equal to 300 MPa and less than or equal to 900 MPa, greater than or equal to 300 MPa and less than or equal to 800 MPa, greater than or equal to 400 MPa and less than or equal to 1 GPa, greater than or equal to 400 MPa and less than or equal to 900 MPa, greater than or equal to 400 MPa and less than or equal to 800 MPa, greater than or equal to 500 MPa and less than or equal to 1 GPa, greater than or equal to 500 MPa and less than or equal to 900 MPa, greater than or equal to 500 MPa and less than or equal to 800 MPa, greater than or equal to 600 MPa and less than or equal to 1 GPa, greater than or equal to 600 MPa and less than or equal to 900 MPa, greater than or equal to 600 MPa and less than or equal to 800 MPa.

In embodiments, the colored glass articles made from the glass composition may have a maximum central tension after ion-exchange strengthening greater than or equal to 40 MPa, greater than or equal to 60 MPa, greater than or equal to 80 MPa, or even greater than or equal to 100 MPa. In embodiments, the colored glass article made from the glass composition may have a maximum central tension after ion-exchange strengthening less than or equal to 250 MPa, less than or equal to 200 MPa, or even less than or equal to 150 MPa. In embodiments, the colored glass article made from the glass composition may have a maximum central tension after ion-exchange strengthening greater than or equal to 40 MPa and less than or equal to 250 MPa, greater than or equal to 40 MPa and less than or equal to 200 MPa, greater than or equal to 40 MPa and less than or equal to 150 MPa, greater than or equal to 60 MPa and less than or equal to 250 MPa, greater than or equal to 60 MPa and less than or equal to 200 MPa, greater than or equal to 60 MPa and less than or equal to 150 MPa, greater than or equal to 80 MPa and less than or equal to 250 MPa, greater than or equal to 80 MPa and less than or equal to 200 MPa, greater than or equal to 80 MPa and less than or equal to 150 MPa, greater than or equal to 100 MPa and less than or equal to 250 MPa, greater than or equal to 100 MPa and less than or equal to 200 MPa, or even greater than or equal to 100 MPa and less than or equal to 150 MPa, or any and all sub-ranges formed from any of these endpoints. As utilized herein, central tension refers to a maximum central tension value unless otherwise indicated.

As described herein, in embodiments, the glass compositions described herein may be formulated to increase the retention of Au, which increases the concentration of Au in the resultant colored glass articles, thereby expanding the color gamut achievable by the colored glass articles. In embodiments, a colored glass article having greater than or equal to 0.01 mol % and less than or equal to 1 mol % Au may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −5 and less than or equal to 25, exclusive of a* greater than −0.3 and less than 0.3, and b* greater than or equal to −20 and less than or equal to 5, exclusive of b* greater than −0.5 and less than 0.5. In embodiments, colored glass article having greater than or equal to 1×10⁻⁶mol % and less than or equal to 1 mol % Au may have a transmittance color coordinate in the CIELAB color space of L* greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −10 and less than or equal to 25 exclusive of a* greater than −0.3 and less than 0.3, and b* greater than or equal to −20 and less than or equal to 5 exclusive of b* greater than −0.5 and less than 0.5.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 60 mol % and less than or equal to 70 mol % SiO₂; greater than or equal to 11 mol % and less than or equal to 17 mol % Al₂O₃; greater than or equal to 2 mol % and less than or equal to 8 mol % B₂O₃; greater than or equal to 9 mol % and less than or equal to 14 mol % Li₂O; greater than or equal to 2 mol % and less than or equal to 6 mol % Na₂O; greater than or equal to 0.1 mol % and less than or equal to 2 mol % MgO; greater than or equal to 0.1 mol % and less than or equal to 2 mol % ZnO; and greater than or equal to 1×10⁻⁶mol % and less than or equal to 0.01 mol % Au. In these embodiments, MgO+ZnO is greater than or equal to 0.1 mol % and less than or equal to 4.5 mol %.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 60 mol % and less than or equal to 70 mol % SiO₂; greater than or equal to 11 mol % and less than or equal to 17 mol % Al₂O₃; greater than or equal to 2 mol % and less than or equal to 8 mol % B₂O₃; greater than or equal to 9 mol % and less than or equal to 14 mol % Li₂O; greater than or equal to 2 mol % and less than or equal to 6 mol % Na₂O; greater than or equal to 0.1 mol % and less than or equal to 0.5 mol % K₂O; and greater than or equal to 1×10⁻⁶mol % and less than or equal to 0.05 mol % Au. In these embodiments, R₂O—Al₂O₃is greater than or equal to 0 mol % and less than or equal to 3 mol %, R₂O being the sum of Li₂O, Na₂O, and K₂O.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 40 mol % and less than or equal to 70 mol % SiO₂; greater than or equal to 8 mol % and less than or equal to 20 mol % Al₂O₃; greater than or equal to 1 mol % and less than or equal to 10 mol % B₂O₃; greater than or equal to 1 mol % and less than or equal to 20 mol % Li₂O; greater than or equal to 1 mol % and less than or equal to 15 mol % Na₂O; greater than or equal to 0 mol % and less than or equal to 8 mol % MgO; greater than or equal to 0 mol % and less than or equal to 5 mol % ZnO; and greater than or equal to 0.0005 mol % and less than or equal to 1 mol % Au, wherein: MgO+ZnO is greater than or equal to 0.1 mol % and less than or equal to 6 mol %.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 40 mol % and less than or equal to 70 mol % SiO₂; greater than or equal to 8 mol % and less than or equal to 20 mol % Al₂O₃; greater than or equal to 1 mol % and less than or equal to 10 mol % B₂O₃; greater than or equal to 1 mol % and less than or equal to 20 mol % Li₂O; greater than or equal to 1 mol % and less than or equal to 15 mol % Na₂O; greater than or equal to 0 mol % and less than or equal to 6 mol % MgO; greater than or equal to 0 mol % and less than or equal to 5 mol % ZnO; and greater than or equal to 1×10⁻⁶mol % and less than or equal to 1 mol % Au, wherein: MgO+ZnO is greater than or equal to 0.1 mol % and less than or equal to 6 mol %.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 50 mol % and less than or equal to 80 mol % SiO₂; greater than or equal to 7 mol % and less than or equal to 25 mol % Al₂O₃; greater than or equal to 1 mol % and less than or equal to 15 mol % B₂O₃; greater than or equal to 5 mol % and less than or equal to 20 mol % Li₂O; greater than or equal to 0.5 mol % and less than or equal to 15 mol % Na₂O; greater than 0 mol % and less than or equal to 1 mol % K₂O; and greater than or equal to 1×10⁻⁶mol % and less than or equal to 1 mol % Au, wherein: R₂O—Al₂O₃is greater than or equal to −5 mol % and less than or equal to 7 mol %, R₂O being the sum of Li₂O, Na₂O, and K₂O.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 50 mol % and less than or equal to 70 mol % SiO₂; greater than or equal to 10 mol % and less than or equal to 17.5 mol % Al₂O₃; greater than or equal to 3 mol % and less than or equal to 10 mol % B₂O₃; greater than or equal to 8.8 mol % and less than or equal to 14 mol % Li₂O greater than or equal to 1.5 mol % and less than or equal to 8 mol % Na₂O; and greater than 0 mol % and less than or equal to 2 mol % Cr₂O₃, wherein: R₂O+R′O—Al₂O₃is greater than or equal to 0.5 mol % and less than or equal to 6 mol %, wherein R₂O is the sum of Li₂O, Na₂O, and K₂O and R′O is the sum of MgO, ZnO, and CaO; and Al₂O₃+MgO+ZnO is greater than or equal to 12 mol % and less than or equal to 22 mol %.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 50 mol. % and less than or equal to 70 mol. % SiO₂; greater than or equal to 10 mol. % and less than or equal to 20 mol. % Al₂O₃; greater than or equal to 4 mol. % and less than or equal to 10 mol. % B₂O₃; greater than or equal to 7 mol. % and less than or equal to 17 mol. % Li₂O greater than or equal to 1 mol. % and less than or equal to 9 mol. % Na₂O; greater than or equal to 0.01 mol. % and less than or equal to 1 mol. % SnO₂; and greater than or equal to 0.01 mol. % and less than or equal to 5 mol. % Ag, wherein R₂O—Al₂O₃is greater than 0.2 mol. % and less than or equal to 5.00 mol. % and R₂O is the sum of Li₂O, Na₂O, and K₂O.

In embodiments, the glass composition and the resultant colored glass article may comprise greater than or equal to 50 mol % and less than or equal to 70 mol % SiO₂; greater than or equal to 10 mol % and less than or equal to 20 mol % Al₂O₃; greater than or equal to 1 mol % and less than or equal to 10 mol % B₂O₃; greater than or equal to 7 mol % and less than or equal to 14 mol % Li₂O; greater than or equal to 0.01 mol % and less than or equal to 8 mol % Na₂O; greater than or equal to 0.01 mol % and less than or equal to 1 mol % K₂O; greater than or equal to 0 mol % and less than or equal to 7 mol % CaO; and greater than or equal to 0 mol % and less than or equal to 8 mol % MgO, wherein Li₂O+K₂O+Na₂O+CaO+MgO+ZnO is less than or equal to 25 mol % and at least one of: CuO+NiO+Co₃O₄+Cr₂O₃is greater than or equal to 0.001 mol %, CeO₂is greater than or equal to 0.1 mol %, and TiO₂is greater than or equal to 0.1 mol %.

In embodiments, the colored glass articles may have an average CTE of less than about 85×10⁻⁷C⁻¹, less than about 80×10⁻⁷C⁻¹, less than about 75×10⁻⁷C⁻¹, less than about 70×10⁻⁷C⁻¹, less than about 65×10⁻⁷C⁻¹, or even less than about 60×10⁻⁷C⁻¹. These relatively low CTE values improve the survivability of the glass to thermal cycling or thermal stress conditions relative to articles with higher CTEs.

In embodiments, the colored glass articles described herein may generally have a strain point greater than or equal to about 400° C. and less than or equal to about 550° C.

In embodiments, the colored glass articles described herein may generally have an anneal point greater than or equal to about 450° C. and less than or equal to about 650° C.

In embodiments, the colored glass articles described herein may generally have a softening point greater than or equal to about 700° C. and less than or equal to about 900° C.

The colored glass articles described herein may be used for a variety of applications including, for example, for housings for consumer electronic devices; for architectural glass applications; for automotive or vehicular glass applications; or for commercial or household appliance applications. In embodiments, a consumer electronic device (e.g., smartphones, tablet computers, watches, personal computers, ultrabooks, televisions, and cameras), an architectural glass, and/or an automotive glass may comprise a colored glass article as described herein.

An example article incorporating any of the colored glass articles disclosed herein is shown in FIGS. 1 and 2. Specifically, FIGS. 1 and 2 show a consumer electronic device 100 including a housing 102 having front 104, back 106, and side surfaces 108; electrical components (not shown) that are at least partially inside or entirely within the housing and including at least a controller, a memory, and a display 110 at or adjacent to the front surface of the housing; and a cover substrate 112 at or over the front surface of the housing such that it is over the display. In embodiments, at least a portion of housing 102, such as the back 106, may include any of the colored glass articles disclosed herein.

EXAMPLES

In order that various embodiments be more readily understood, reference is made to the following examples, which illustrate various embodiments of the colored glass articles described herein.

Heat Treatment—The heat treatment of the Examples below included placing the glass articles between a SiC setter, placing the glass articles in an oven and heating the oven to the indicated heat treatment temperature at a rate of 4° C./min, and cooling from the heat treatment temperature after the heat treatment time had lapsed at a cooling rate of 3° C./min.

Table 1 shows comparative examples Comp. 1 and Comp. 2 and examples 1-30, with the batch compositions utilized to form each example reported (in terms of mol %). Table 1 also reports the heat treatment used to produce colored glass articles from the batch compositions and the analyzed Au concentration (in terms of mol %) of the resultant colored glass articles.

TABLE 1

Example
1
2
3
Comp. 1
Comp. 2
4

SiO₂
58.8
58.8
58.8
58.5
58.5
58.5

Al₂O₃
16.5
16.5
16.5
16.5
16.5
16.5

B₂O₃
6.0
6.0
6.0
6.0
6.0
6.0

Li₂O
10.0
10.0
10.0
12.0
12.0
10.0

Na₂O
4.5
4.5
4.5
6.5
6.5
4.5

K₂O
0.2
0.2
0.2
0.5
0.5
0.5

MgO
3.0
3.0
3.0
—
—
3.0

ZnO
1.0
1.0
1.0
—
—
1.0

ZrO₂
—
—
—
—
—
—

P₂O₅
—
—
—
—
—
—

SnO₂
—
—
—
—
—
—

Fe₂O₃
—
—
—
—
—
—

Au
0.005
0.005
0.005
0.010
0.020
0.010

R₂O
14.7
14.7
14.7
19.0
19.0
15.0

MgO + ZnO
4.0
4.0
4.0
0.0
0.0
4.0

R₂O − Al₂O₃
−1.8
−1.8
−1.8
2.5
2.5
−1.5

5.72*Al₂O₃−
−546.7
−546.7
−546.7
−585.9
−585.9
−552.2

21.4*ZnO −

2.5*P205 −

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

HEAT TREATMENT

Melting temperature
1550
1500
1450
1450
1450
1450

(° C.)

Melting time (hours)
18
18
18
18
18
18

Analyzed Au (mol %)
0.0009
0.0017
0.0018
0.0013
0.0023
0.0030

% of Au retained
18.0
34.0
36.0
13.0
11.5
30.0

Example
5
6
7
8
9
10

SiO₂
58.5
60.7
60.7
60.7
60.7
60.7

Al₂O₃
16.5
14.5
14.5
14.5
14.5
14.5

B₂O₃
6.0
6.0
6.0
6.0
6.0
6.0

Li₂O
10.0
10.0
10.0
10.0
10.0
10.0

Na₂O
4.5
4.5
4.5
4.5
4.5
4.5

K₂O
0.5
0.5
0.5
0.5
0.5
0.2

MgO
3.0
3.0
3.0
3.0
3.0
3.0

ZnO
1.0
1.0
1.0
1.0
1.0
1.0

ZrO₂
—
—
0.5
—
0.5
0.5

P₂O₅
—
—
—
1.0
1.0
—

SnO₂
—
0.10
0.10
0.10
0.10
0.05

Fe₂O₃
—
—
—
—
—
—

Au
0.020
0.005
0.005
0.005
0.005
0.005

R₂O
15.0
15.0
15.0
15.0
15.0
14.7

MgO + ZnO
4.0
4.0
4.0
4.0
4.0
4.0

R₂O − Al₂O₃
−1.5
0.5
0.5
0.5
0.5
0.2

5.72*Al₂O₃−
−552.2
−563.7
−563.7
−566.2
−566.2
−558.1

21.4*ZnO −

2.5*P205 −

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

HEAT TREATMENT

Melting temperature
1450
1550
1550
1550
1550
1550

(° C.)

Melting time (hours)
18
18
18
18
18
18

Analyzed Au (mol %)
0.0043
0.0013
0.0018
0.0006
0.0007
0.0019

% of Au retained
21.5
26.0
36.0
12.0
14.0
38.0

Example
11
12
13
14
15
16

SiO₂
60.7
60.7
60.7
61.8
61.8
61.8

Al₂O₃
14.5
14.5
14.5
14.5
14.5
14.5

B₂O₃
6.0
6.0
6.0
6.0
6.0
6.0

Li₂O
10.0
10.0
10.0
6.5
6.5
6.5

Na₂O
4.5
4.5
4.5
8.0
8.0
8.0

K₂O
0.2
0.2
0.2
0.2
0.2
0.2

MgO
3.0
3.0
3.0
2.0
2.0
2.0

ZnO
1.0
1.0
1.0
1.0
1.0
1.0

ZrO₂
0.2
0.3
0.5
—
—
0.2

P₂O₅
—
—
—
—
—
—

SnO₂
0.01
0.03
0.05
—
0.05
0.05

Fe₂O₃
—
—
—
—
—
—

Au
0.005
0.005
0.005
0.005
0.005
0.005

R₂O
14.7
14.7
14.7
14.7
14.7
14.7

MgO + ZnO
4.0
4.0
4.0
3.0
3.0
3.0

R₂O − Al₂O₃
0.2
0.2
0.2
0.2
0.2
0.2

5.72*Al₂O₃−
−558.1
−558.1
−558.1
−496.7
−496.7
−496.7

21.4*ZnO −

2.5*P205 −

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

HEAT TREATMENT

Melting temperature
1550
1550
1550
1500
1500
1500

(° C.)

Melting time (hours)
18
18
18
18
18
18

Analyzed Au (mol %)
0.0013
0.0016
0.0017
0.0009
0.0010
0.0012

% of Au retained
26.0
32.0
34.0
18.0%
20.0%
24.0%

Example
17
18
19
20
21
22

SiO₂
61.8
61.8
61.8
60.8
60.8
60.8

Al₂O₃
14.5
14.5
14.5
15.5
15.5
15.5

B₂O₃
6.0
6.0
6.0
6.0
6.0
6.0

Li₂O
6.5
6.5
6.5
6.5
6.5
6.5

Na₂O
8.0
8.0
8.0
8.0
8.0
8.0

K₂O
0.2
0.2
0.2
0.2
0.2
0.2

MgO
2.0
2.0
2.0
2.0
2.0
2.0

ZnO
1.0
1.0
1.0
1.0
1.0
1.0

ZrO₂
—
—
0.2
—
—
0.2

P₂O₅
—
—
—
—
—
—

SnO₂
—
0.05
0.05
—
0.05
0.05

Fe₂O₃
—
—
—
—
—
—

Au
0.005
0.005
0.005
0.005
0.005
0.005

R₂O
14.7
14.7
14.7
14.7
14.7
14.7

MgO + ZnO
3.0
3.0
3.0
3.0
3.0
3.0

R₂O − Al₂O₃
0.2
0.2
0.2
−0.8
−0.8
−0.8

5.72*Al₂O₃−
−496.7
−496.7
−496.7
−490.9
−490.9
−490.9

21.4*ZnO −

2.5*P205 −

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

HEAT TREATMENT

Melting temperature
1500
1500
1500
1500
1500
1500

(° C.)

Melting time (hours)
18
18
18
18
18
18

Analyzed Au (mol %)
0.0010
0.0011
0.0014
0.0012
0.0012
0.0012

% of Au retained
20.0%
22.0%
28.0%
24.0%
24.0%
24.0%

Example
23
24
25
26
27
28

SiO₂
61.2
61.2
60.7
60.7
60.7
60.7

Al₂O₃
14.5
14.5
14.5
14.5
14.5
14.5

B₂O₃
6.0
6.0
6.0
6.0
6.0
6.0

Li₂O
6.5
6.5
8.0
9.0
9.0
9.0

Na₂O
8.0
8.0
4.5
4.5
4.5
4.5

K₂O
0.8
0.8
0.2
0.2
0.2
0.2

MgO
2.0
2.0
4.0
4.0
3.0
4.0

ZnO
1.0
1.0
2.0
1.0
2.0
1.0

ZrO₂
—
—
—
—
—
—

P₂O₅
—
—
—
—
—
—

SnO₂
0.10
0.10
0.05
0.05
0.05
0.05

Fe₂O₃
0.05
0.05
0.10
0.05
0.05
0.10

Au
0.005
0.005
0.005
0.005
0.005
0.005

R₂O
15.3
15.3
12.7
13.7
13.7
13.7

MgO + ZnO
3.0
3.0
6.0
5.0
5.0
5.0

R₂O − Al₂O₃
0.8
0.8
−1.8
−0.8
−0.8
−0.8

5.72*Al₂O₃−
−506.8
−506.8
−530.0
−543.6
−544.5
−543.6

21.4*ZnO −

2.5*P205 −

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

HEAT TREATMENT

Melting temperature
1500
1500
1500
1500
1500
1500

(° C.)

Melting time (hours)
16
16
18
18
18
18

Analyzed Au (mol %)
0.0016
0.0017
0.0005
0.0009
0.0005
0.0006

% of Au retained
32.0%
34.0%
10.0%
18.0%
10.0%
12.0%

Example
29
30

SiO₂
61.2
61.2

Al₂O₃
14.5
14.5

B₂O₃
6.0
6.0

Li₂O
6.5
6.5

Na₂O
8.0
8.0

K₂O
0.8
0.8

MgO
2.0
2.0

ZnO
1.0
1.0

ZrO₂
—
—

P₂O₅
—
—

SnO₂
0.10
0.10

Fe₂O₃
0.05
0.05

Au
0.005
0.005

R₂O
15.3
15.3

MgO + ZnO
3.0
3.0

R₂O − Al₂O₃
−0.8
−0.8

5.72*Al₂O₃−
−544.5
−544.5

21.4*ZnO −

2.5*P205 −

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

HEAT TREATMENT

Melting temperature
1500
1500

(° C.)

Melting time (hours)
18
18

Analyzed Au (mol %)
0.0006
0.0013

% of Au retained
12.0%
26.0%

Referring to Table 1, Examples 1-3 were formed from the same glass composition, but melted at different temperatures. Example 1, which was melted at 1550° C., had an Au retention of 18.0%. Examples 2 and 3, which were melted at 1500° C. and 1450° C., respectively, had Au retentions of 34.0% and 36.0%, respectively. As indicated by Examples 1-3, a lower melting temperature favors Au retention. Therefore, it may be desirable to form a glass composition having a lower melting point such that Au retention during processing may be improved.

Comparative Examples Comp. 1 and Comp. 2 had an Au retention of 13.0% and 11.5%, respectively, after being melted at 1450° C. for 18 hours. Examples 4 and 5, which were similar to Comparative Examples Comp. 1 and Comp. 2, respectively, but included MgO and ZnO, had Au retentions of 30.0% and 21.5%, respectively, after being melted at 1450° C. for 18 hours. As indicated by Comparative Examples Comp. 1 and Comp. 2 and Examples 4 and 5, including MgO and ZnO in the glass composition improves Au retention of the resultant colored glass article.

Example 6 had an Au retention of 26.0% after being melted at 1550° C. for 18 hours. Example 7, which was similar to Example 3 but included ZrO₂, had an Au retention of 36.0% after being melted at 1550° C. for 18 hours. As indicated by Examples 6 and 7, including ZrO₂in addition to MgO and ZnO in the glass composition improves Au retention of the resultant colored glass article.

Examples 8 and 9, which were similar to Examples 6 and 7, respectively, but included P₂O₅, had lower Au retentions of 12.0% and 14.0%, respectively, after being melted at 1550° C. for 18 hours. As indicated by Examples 6-9, including P₂O₅in the glass composition impairs Au retention of the resultant colored glass article.

Examples 10-13, which included ZrO₂and SnO₂, had relatively higher Au retentions of 38.0%, 26.0%, 32.0%, and 34%, respectively, after being melted at 1550° C. for 18 hours. As indicated by Examples 10-13, including SnO₂in addition to MgO, ZnO, and ZrO₂in the glass compositions improves Au retention of the resultant colored glass article.

Examples 14 and 17 had an Au retention of 18.0% and 20.0%, respectively, after being melted at 1550° C. for 18 hours. Examples 15 and 18, which were similar to Examples 14 and 17, but included SnO₂, had an Au retention of 20.0% and 22%, respectively, after being melted at 1550° C. for 18 hours. As indicated by Examples 15 and 18, including SnO₂in addition to MgO and ZnO in the glass composition improves Au retention of the resultant colored glass article.

Examples 16 and 19, which included ZrO₂and SnO₂, had relatively higher Au retentions of 24.0% and 28.0%, respectively, after being melted at 1550° C. for 18 hours. As indicated by Examples 16 and 19, including SnO₂in addition to MgO, ZnO, and ZrO₂in the glass compositions improves Au retention of the resultant colored glass article.

Examples 23 and 24, which included Fe₂O₃, had relatively higher Au retentions of 32.0% and 34.0%, respectively, after being melted at 1550° C. for 18 hours. As indicated by Examples 23 and 24, including Fe₂O₃in addition to MgO, ZnO, and ZrO₂in the glass compositions improves Au retention of the resultant colored glass article.

Referring now to FIGS. 3A-3C, 4A-4C, 5A-5C, and 6A-6C, a gradient-temperature approach was used to identify the heat treatment cycle parameters (i.e., temperature and duration) to achieve the desired color coordinates. Specifically, a 12 cm long and 1.5 mm thick sample formed from the glass composition of Example 11 was placed in a gradient-temperature oven and held at a heat treatment temperature, which varied along the length of the sample, for the prescribed duration. The sample was then rapidly cooled to quench the sample and the precipitated Au particles therein. Optical transmission spectra were then measured every 2 mm along the direction of the gradient. The coordinates in the CIELAB color space were plotted, as measured under F2 illumination and a 10° standard observer angle, in which the heat treatment temperature moved through the color space with separate plots for the four different heat treatment durations: 0.25 hour (FIGS. 3A-3C), 0.5 hour (FIGS. 4A-4C), 1 hour (FIGS. 5A-5C), and 1.5 hour (FIGS. 6A-6C). As indicated by FIGS. 3A-3C, 4A-4C, 5A-5C, and 6A-6C, different heat treatment temperatures and durations may be used to achieve the desired color.

Note that, as described herein, processing of the glass compositions to produce the resultant colored glass articles may occur in an isothermal oven. However, a gradient-temperature oven was used in these examples to investigate a range of temperatures simultaneously. A gradient-temperature oven produces similar results as an isothermal oven at the desired temperature.

Table 2 shows examples 31-65, with the analyzed concentration (in terms of mol %) of the resultant colored glass articles.

TABLE 2

Example
31
32
33
34
35
36

SiO₂
61.09
61.03
61.08
60.99
60.87
60.73

Al₂O₃
14.51
14.50
14.51
14.49
14.44
14.58

B₂O₃
6.00
6.00
5.86
5.93
5.91
5.94

Li₂O
9.94
9.94
10.07
10.10
10.01
10.10

Na₂O
4.30
4.33
4.28
4.28
4.25
4.31

K₂O
0.19
0.19
0.19
0.19
0.45
0.19

MgO
2.89
2.90
2.89
2.89
2.89
2.93

ZnO
1.00
1.00
0.99
0.99
0.99
1.05

ZrO₂
0.22
0.30
0.45
0.50
0.03
0.00

P₂O₅
—
—
—
—
—
—

SnO₂
0.02
0.03
0.05
0.07
0.11
0.11

Fe₂O₃
0.02
0.02
0.02
0.02
0.02
0.00

Au
0.0013
0.0015
0.0017
0.0019
0.0013
0.0009

R₂O
14.43
14.46
14.54
14.57
14.71
14.60

MgO + ZnO
3.89
3.90
3.88
3.88
3.88
3.98

R₂O − Al₂O₃
−0.08
−0.04
0.03
0.08
0.27
0.02

5.72*Al₂O₃−
−548.9
−549.8
−550.4
−552.7
−553.6
−555.2

21.4*ZnO −

2.5*1'205 −

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

Example
37
38
39
40
41
42

SiO₂
61.26
60.71
59.87
60.15
59.28
61.36

Al₂O₃
14.38
14.65
14.86
15.43
15.07
15.72

B₂O₃
5.89
5.95
5.95
5.88
5.70
6.00

Li₂O
10.00
10.05
10.14
10.01
9.80
10.21

Na₂O
4.28
4.30
4.31
4.27
6.03
4.34

K₂O
0.19
0.19
0.19
0.19
0.18
0.20

MgO
2.86
2.93
3.11
2.89
2.80
0.97

ZnO
1.01
1.06
1.09
1.02
0.99
1.05

ZrO₂
0.00
0.00
0.32
0.00
0.00
0.00

P₂O₅
—
—
—
—
—
—

SnO₂
0.06
0.05
0.05
0.11
0.10
0.11

Fe₂O₃
0.00
0.07
0.07
0.00
0.00
0.00

Au
0.0007
0.0005
0.0007
0.0008
0.0005
0.0010

R₂O
14.47
14.54
14.64
14.47
16.01
14.75

MgO + ZnO
3.87
3.99
4.20
3.91
3.79
2.02

R₂O − Al₂O₃
0.09
−0.11
−0.22
−0.96
0.94
−0.97

5.72*Al₂O₃−
−549.0
−553.2
−559.7
−543.8
−573.8
−514.2

21.4*ZnO −

2.5*1'205 −

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

Example
43
44
45
46
47
48

SiO₂
60.94
59.36
60.40
60.59
60.56
60.64

Al₂O₃
16.51
16.42
15.52
15.32
15.23
15.08

B₂O₃
5.89
5.78
6.05
6.04
6.04
6.01

Li₂O
10.05
9.90
10.66
10.65
10.63
10.74

Na₂O
4.27
4.22
4.77
4.79
4.89
4.90

K₂O
0.19
0.19
0.19
0.19
0.20
0.20

MgO
0.97
2.94
0.97
0.97
0.98
0.97

ZnO
1.03
1.03
1.02
1.02
1.05
1.05

ZrO₂
0.00
0.00
0.31
0.32
0.31
0.32

P₂O₅
—
—
—
—
—
—

SnO₂
0.10
0.11
0.05
0.06
0.06
0.05

Fe₂O₃
—
—
—
—
—
—

Au
0.0010
0.0006
0.0008
0.0008
0.0008
0.0007

R₂O
14.51
14.31
15.62
15.63
15.72
15.84

MgO + ZnO
2.00
3.97
1.99
1.99
2.03
2.02

R₂O − Al₂O₃
−2.00
−2.11
0.10
0.31
0.49
0.76

5.72*Al₂O₃−
−500.0
−532.7
−541.1
−542.2
−545.4
−549.6

21.4*ZnO −

2.5*1'205 −

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

Example
49
50
51
52
53
54

SiO₂
60.94
59.36
60.40
60.59
62.14
62.08

Al₂O₃
16.51
16.42
15.52
15.32
14.95
14.98

B₂O₃
5.89
5.78
6.05
6.04
6.06
5.93

Li₂O
10.05
9.90
10.66
10.65
10.51
10.69

Na₂O
4.27
4.22
4.77
4.79
4.29
4.31

K₂O
0.19
0.19
0.19
0.19
0.14
0.14

MgO
0.97
2.94
0.97
0.97
0.50
0.50

ZnO
1.03
1.03
1.02
1.02
1.03
1.00

ZrO₂
0.00
0.00
0.31
0.32
0.29
0.29

P₂O₅
—
—
—
—
—
—

SnO₂
0.10
0.11
0.05
0.06
0.04
0.04

Fe₂O₃
—
—
—
—
0.04
0.04

Au
0.0008
0.0010
0.0012
0.0015
0.0014
0.0011

R₂O
14.51
14.31
15.62
15.63
14.94
15.14

MgO + ZnO
2.00
3.97
1.99
1.99
1.54
1.51

R₂O − Al₂O₃
−2.00
−2.11
0.10
0.31
−0.01
0.16

5.72*Al₂O₃−
−556.1
−558.4
−557.7
−558.9
−517.8
−521.6

21.4*ZnO −

2.5*1'205 −

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

Example
55
56
57
58
59
60

SiO₂
62.06
61.95
61.95
61.67
61.01
60.66

Al₂O₃
14.92
14.87
14.88
14.88
14.96
15.03

B₂O₃
5.92
5.91
5.92
5.93
6.04
6.06

Li₂O
10.86
11.03
11.04
11.06
11.18
11.21

Na₂O
4.25
4.24
4.24
4.25
4.26
4.28

K₂O
0.14
0.14
0.14
0.14
0.14
0.14

MgO
0.50
0.50
0.49
0.50
0.50
0.50

ZnO
1.01
1.02
1.01
1.02
1.03
1.03

ZrO₂
0.28
0.28
0.28
0.28
0.28
0.28

P₂O₅
—
—
—
0.21
0.56
0.76

SnO₂
0.04
0.04
0.04
0.04
0.04
0.04

Fe₂O₃
0.02
0.01
—
—
—
—

Au
0.0010
0.0010
0.0011
0.0010
0.0010
0.0010

R₂O
15.25
15.41
15.42
15.46
15.58
15.63

MgO + ZnO
1.51
1.52
1.50
1.52
1.53
1.54

R₂O − Al₂O₃
0.33
0.54
0.55
0.58
0.62
0.60

5.72*Al₂O₃−
−526.5
−532.6
−532.8
−534.9
−541.5
−543.7

21.4*ZnO −

2.5*1'205 −

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

Example
61
62
63
64
65

SiO₂
60.51
60.49
60.80
60.94
61.47

Al₂O₃
15.06
15.02
14.76
14.61
14.60

B₂O₃
6.06
6.07
6.05
5.97
5.91

Li₂O
11.21
11.22
11.20
11.17
11.12

Na₂O
4.30
4.30
4.29
4.29
4.27

K₂O
0.14
0.14
0.14
0.15
0.15

MgO
0.51
0.51
0.51
0.51
0.50

ZnO
1.03
1.04
1.03
1.03
1.04

ZrO₂
0.28
0.28
0.28
0.48
0.50

P₂O₅
0.86
0.89
0.90
0.81
0.40

SnO₂
0.04
0.04
0.04
0.04
0.04

Fe₂O₃
—
—
—
—
—

Au
0.0009
0.0010
0.0009
0.0011
0.0010

R₂O
15.65
15.67
15.63
15.61
15.53

MgO + ZnO
1.54
1.54
1.53
1.54
1.54

R₂O − Al₂O₃
0.59
0.65
0.87
1.00
0.93

5.72*Al₂O₃−
−544.2
−545.2
−545.1
−543.6
−539.3

21.4*ZnO −

2.5*1'205 −

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

Referring now to Table 3, example glass articles 31-35 having the concentrations shown in Table 2 were subjected to isothermal heat treatment between 600° C. and 660° C. The observable colors of the resultant colored glass articles are shown in Table 3. Heat treating example glass articles 31, 32, and 33 having an analyzed R₂O—Al₂O₃of −0.08 mol %, −0.04 mol %, and 0.03 mol %, respectively, resulted in observably pink, purple, and red colored glass articles. Heat treating example glass articles 34 and 35, having an analyzed R₂O—Al₂O₃of 0.08 mol % and 0.27 mol %, respectively, resulted in observably red and orange colored glass articles. As indicated by Tables 2 and 3, the analyzed R₂O—Al₂O₃of a glass article may be adjusted and the glass article may be subjected to a certain heat treatment to provide a desired colored glass article.

TABLE 3

Example
31
32
33
34
35

Observable colors
pink,
pink,
pink,
pink,
orange,

purple
purple
purple
red,
red

purple

Referring now to Table 4, example glass articles 36-48 having the analyzed concentrations shown in Table 2 were subjected to heat treatment at the temperature and for the period of time shown in Table 4. The observable colors of the resultant colored glass articles are shown in Table 4.

TABLE 4

550°
575°
600°
625°
650°

Heat
C. for
C. for
C. for
C. for
C. for

treatment
2 hrs.
2 hrs.
2 hrs.
2 hrs.
2 hrs.

36
purple
purple
purple
purple
—

37
clear,
purple
purple
red
—

purple

38
pink
pink
pink
pink
—

39
red
red
red
red
—

40
clear,
purple
purple
purple
—

purple

41
orange
orange
orange
orange
—

42
clear,
purple
purple
purple
—

purple

43
clear
clear
purple
purple
—

44
clear
clear
purple
purple
—

45
purple
purple
purple
red
red

46
clear,
purple
purple
red
red

purple

47
purple
purple
red
red
red

48
purple
purple
red
red
red

Example glass article 41, having an analyzed R₂O—Al₂O₃of 0.94 mol %, was the only glass article to result in an observably orange colored glass article after heat treatment. Example glass articles 36-40 and 42-48 had an R₂O—Al₂O₃of 0.76 mol % or less. Heat treating glass article 38, including Fe₂O₃, resulted in an observably pink colored glass article. Heat treating glass articles 39 and 45-48, including ZrO₂, resulted in red colored glass articles. As indicated by Tables 2 and 4, the analyzed R₂O—Al₂O₃may be adjusted, additional components may be added to the glass composition, and the glass article may be subjected to a certain heat treatment to provide a desired colored glass article.

Table 5 shows examples 66-75, with the analyzed concentration (in terms of mol %) of the resultant colored glass articles.

TABLE 5

Example
66
67
68
69
70
71

SiO₂
62.15
62.27
62.22
62.19
62.08
61.95

Al₂O₃
14.93
14.97
14.90
14.95
14.98
14.87

B₂O₃
6.09
5.98
6.03
6.03
5.93
5.91

Li₂O
10.50
10.45
10.53
10.50
10.69
11.03

Na₂O
4.30
4.30
4.28
4.27
4.31
4.24

K₂O
0.14
0.14
0.14
0.14
0.14
0.14

MgO
0.50
0.50
0.50
0.50
0.50
0.50

ZnO
1.03
1.00
1.03
1.04
1.00
1.02

ZrO₂
0.28
0.29
0.28
0.29
0.29
0.28

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.04
0.04
0.04
0.04
0.04
0.04

Fe₂O₃
0.04
0.04
0.04
0.04
0.04
0.01

Au
6.0 × 10⁻⁶
9.0 × 10⁻⁶
1.2 × 10⁻⁵
1.1 × 10⁻⁵
8.0 × 10⁻⁶
1.0 × 10⁻⁵

R₂O
14.94
14.89
14.95
14.91
15.14
15.41

MgO + ZnO
1.53
1.50
1.53
1.54
1.50
1.52

R₂O − Al₂O₃
0.01
−0.08
0.05
−0.04
0.16
0.54

5.72*Al₂O₃−
−518.27
−513.82
−518.03
−516.67
−521.57
−532.56

21.4*ZnO −

2.5*1'205 −

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

Example
72
73
74
75

SiO₂
61.67
61.47
62.75
61.67

Al₂O₃
14.88
14.60
14.47
14.88

B₂O₃
5.93
5.91
5.88
5.93

Li₂O
11.06
11.12
11.07
11.06

Na₂O
4.25
4.27
4.27
4.25

K₂O
0.14
0.15
0.15
0.14

MgO
0.50
0.50
0.29
0.50

ZnO
1.02
1.04
0.47
1.02

ZrO₂
0.28
0.50
0.52
0.28

P₂O₅
0.21
0.40
0.08
0.21

SnO₂
0.04
0.04
0.04
0.04

Fe₂O₃
0.00
0.00
0.00
0.00

Au
8.3 × 10⁻⁶
8.3 × 10⁻⁶
8.3 × 10⁻⁶
8.3 × 10⁻⁶

R₂O
15.45
15.54
15.49
15.45

MgO + ZnO
1.52
1.54
0.76
1.52

R₂O − Al₂O₃
0.57
0.94
1.02
0.57

5.72*Al₂O₃−
−534.64
−539.57
−520.76
−534.64

21.4*ZnO −

2.5*1'205 −

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

Referring now to Table 6, example glass articles 66 and 68-75 having the analyzed concentrations shown in Table 5 were subjected to heat treatment at the temperature and for the period of time shown in Table 6. The observable colors of the resultant colored glass articles are shown in Table 6.

TABLE 6

Heat
550° C. for
575° C. for
600° C. for
625° C. for
650° C. for
550° C. for
575° C. for

treatment
2 hrs.
2 hrs.
2 hrs.
2 hrs.
2 hrs.
8 hrs.
8 hrs.

66
—
blue
blue
blue
—
—
—

68
—
blue
blue
red
—
—
—

69
—
purple
purple
red
—
—
—

70
red
purple
blue
blue
—
—
—

71
clear,
blue
blue
purple
—
—
—

purple

72
clear,
purple
purple
purple
—
—
—

purple

73
clear,
purple
purple
purple
—
—
—

purple

74
clear,
purple
purple
red
red
red
red

purple

75
—
—
purple
red
red
purple
red

Example glass articles 71-75, having an analyzed R₂O—Al₂O₃of greater than or equal to 0.54 mol %, had a relatively limited achievable color gamut after being subjected to different heat treatments. As indicated by Table 6, a relatively increased R₂O—Al₂O₃may limit the achievable color gamut of the colored glass article.

Referring now to Table 7, example glass article 66 having the analyzed concentrations shown in Table 5 and the thicknesses shown in Table 7 were subjected to heat treatment at the temperature and for the period of time shown in Table 7. The transmittance color coordinate in the CIELAB color space, as measured at the indicated article thickness under F2 illumination and a 10° standard observer angle, and the observable color of the resultant colored glass articles are shown in Table 7.

TABLE 7

525° C. for
535° C. for
535° C. for
545° C. for
575° C. for

Thickness

6 hrs.
6 hrs.
10 hrs.
10 hrs.
2 hrs.

L*
96.39
95.09
92.01
91.06
92.75

a*
0.15
1.68
4.21
2.53
−0.60

b*
0.27
−0.12
−2.12
−3.64
−2.62

Observable color
clear
pink
pink
purple
blue

1.33 mm
L*
96.14
94.18
86.80
84.96
87.95

a*
0.31
2.60
8.81
3.50
−1.67

b*
0.42
−0.09
−4.55
−7.99
−5.86

Observable color
clear
pink
pink
purple
blue

2.06 mm
L*
95.69
90.65
83.19
78.95
83.25

a*
0.55
6.37
13.52
6.58
−3.01

b*
0.63
−0.97
−4.53
−11.46
−8.40

Observable color
clear
pink
pink
purple
blue

600° C. for
625° C. for

Thickness

2 hrs.
2 hrs.

0.6 mm
L*
93.60
92.21

a*
−0.61
−0.12

b*
−0.60
−1.91

Observable color
blue
blue

1.33 mm
L*
90.23
87.41

a*
−1.34
−0.15

b*
−1.72
−4.02

Observable color
blue
blue

2.06 mm
L*
86.49
82.29

a*
−2.05
−0.24

b*
−2.30
−5.93

Observable color
blue
blue

Referring now to Table 8, example glass article 68 having the analyzed concentrations shown in Table 5 and the thicknesses shown in Table 8 were subjected to heat treatment at the temperature and for the period of time shown in Table 8. The transmittance color coordinate in the CIELAB color space, as measured at the indicated article thickness under F2 illumination and a 10° standard observer angle, and the observable color of the resultant colored glass articles are shown in Table 8.

TABLE 8

545° C. for
550° C. for
555° C. for
535° C. for
545° C. for

Thickness

2 hrs.
2 hrs.
1.5 hrs.
10 hrs.
4 hrs.

0.6 mm
L*
93.11
92.14
91.56
91.16
90.79

a*
3.74
4.82
4.74
6.02
5.90

b*
−0.62
−1.31
−2.06
−0.27
−1.33

Observable color
pink
pink
pink
red
pink

1.33 mm
L*
89.09
87.26
86.79
85.12
84.78

a*
7.98
9.84
9.46
12.00
11.74

b*
−1.42
−2.58
−3.64
−0.72
−2.32

Observable color
pink
purple
pink
red
pink

2.06 mm
L*
84.41
81.51
81.40
79.52
78.50

a*
12.63
15.29
14.09
17.14
17.21

b*
−2.25
−4.01
−5.39
−0.26
−3.16

Observable color
pink
purple
pink
red
red

560° C. for
555° C. for
570° C. for
625° C. for
600° C. for

Thickness

0.75 hrs.
4 hrs.
0.75 hrs.
3 hrs.
2 hrs.

0.6 mm
L*
92.14
89.13
88.96
88.74
89.18

a*
4.61
5.00
4.90
2.75
−1.05

b*−1.57
−1.57
−3.95
−4.51
−4.49
−4.32

Observable color
pink
purple
purple
purple
purple

1.33 mm
L*
85.56
81.32
79.76
80.41
79.58

a*
10.56
10.79
7.38
5.66
−2.04

b*
−4.34
−7.51
−10.45
−9.10
−9.85

Observable color
pink
purple
purple
purple
purple

2.06 mm
L*
77.01
74.55
70.91
71.91
71.33

a*
16.22
16.05
8.60
8.16
−2.76

b*
−8.50
−9.19
−15.68
−13.36
−14.14

Observable color
pink
pink
purple
purple
purple

575° C. for
575° C. for

Thickness

2 hrs.
4 hrs.

0.6 mm
L*
88.09
88.92

a*
−01.8
1.77

b*
−5.64
−4.80

Observable color
blue
blue

1.33 mm
L*
78.27
80.57

a*
0.17
3.42

b*
−11.89
−9.88

Observable color
blue
blue

2.06 mm
L*
70.17
72.06

a*
−0.58
4.74

b*
−16.48
−14.79

Observable color
blue
blue

Referring now to Table 9, example glass article 68 having the analyzed concentrations shown in Table 5 and the thicknesses shown in Table 9 were subjected to heat treatment at the temperature and for the period of time shown in Table 9. The transmittance color coordinate in the CIELAB color space, as measured at the indicated article thickness under F2 illumination and a 10° standard observer angle, and the observable color of the resultant colored glass articles are shown in Table 9.

TABLE 9

530° C. for
535° C. for
545° C. for
550° C. for
555° C. for

Thickness

3 hrs.
6 hrs.
2 hrs.
2 hrs.
1.5 hrs.

0.6 mm
L*
94.72
90.50
89.99
88.79
88.58

a*
1.96
6.78
7.30
7.58
7.50

b*
0.34
0.18
−0.85
−1.80
−2.57

Observable color
pink
pink
pink
pink
pink

1.33 mm
L*
92.64
84.15
83.50
80.52
79.57

a*
3.99
13.49
14.01
14.51
14.41

b*
0.62
0.67
−0.95
−3.71
−5.60

Observable color
pink
red
red
pink
pink

2.06 mm
L*
90.49
77.92
74.81
72.37
71.79

a*
6.07
19.65
21.74
20.56
21.07

b*
0.97
1.59
−1.98
−5.27
−6.54

Observable color
pink
red
pink
pink
pink

555° C. for
650° C. for
540° C. for
565° C. for
585° C. for

Thickness

4 hrs.
2 hrs.
3 hrs.
1.75 hrs.
2 hrs.

0.6 mm
L*
88.59
87.25
88.03
86.62
87.36

a*
6.20
7.01
4.98
3.98
2.37

b*
−2.50
−4.14
−4.41
−5.65
−5.52

Observable color
purple
purple
purple
purple
purple

1.33 mm
L*
80.63
77.89
78.78
76.92
77.59

a*
13.13
13.81
10.10
8.92
5.17

b*
−3.71
−7.35
−8.78
−10.22
−10.98

Observable color
purple
purple
purple
purple
purple

2.06 mm
L*
71.87
68.47
70.21
67.15
68.17

a*
18.44
19.71
14.96
12.94
7.47

b*
−6.46
−10.62
−12.00
−14.54
−15.73

Observable color
purple
purple
purple
purple
purple

560° C. for
600° C. for

Thickness

0.75 hrs.
2 hrs.

0.6 mm
L*
87.04
87.56

a*
0.99
1.39

b*
−6.09
−5.32

Observable color
blue
blue

1.33 mm
L*
77.03
77.57

a*
3.32
2.56

b*
−11.99
−10.84

Observable color
blue
blue

2.06 mm
L*
67.17
68.30

a*
3.12
4.07

b*
−17.38
−15.38

Observable color
blue
blue

As indicated in Tables 7-9, colored glass articles including Au may be subjected to different heat treatment to achieve a desired observable color.

Table 10 shows the surface compressive stress CS, depth of layer DOL, and maximum central tension CT of example glass article 67 after being subjected to heat treatment at 545° C. for 2 hrs. and then being subjected to ion-exchange under the conditions listed in Table 10.

TABLE 10

IOX temp. (° C.)
400
400
400
400
400
400
400

IOX time (hrs.)
5
6
7
8
6
6.5
6.5

KNO₃in
83.0
83.0
83.0
83.0
83.0
83.0
80.0

IOX bath (wt %)

NaNO₃in
15.4
15.4
15.4
15.4
15.6
15.0
18.0

IOX bath (wt %)

LiNO₃in
1.6
1.6
1.6
1.6
1.4
2.0
2.0

IOX bath (wt %)

CS (MPa)
720
643
632
623
657
621
611

DOL (μm)
4.46
4.86
5.36
5.44
5.00
5.04
4.85

CT (MPa)
111.1
117.4
116.3
115.6
119.2
109.1
118.2

Table 11 shows example compositions C1-C26, with the analyzed concentration (in terms of mol %) of the resultant colored glass articles.

TABLE 11

Composition
C1
C2
C3
C4
C5
C6

SiO₂
61.21
61.94
62.86
61.81
61.91
61.36

Al₂O₃
14.46
14.48
14.52
15.56
15.54
15.75

B₂O₃
5.84
5.95
5.92
5.88
5.89
5.91

Li₂O
11.79
10.95
11.01
11.05
11.02
11.17

Na₂O
6.34
6.32
5.34
5.34
5.34
5.42

K₂O
0.19
0.19
0.19
0.19
0.19
0.19

MgO
0.01
0.02
0.01
0.02
0.02
0.02

CaO
—
—
—
—
—
—

ZnO
—
—
—
—
—
—

ZrO₂
—
—
—
—
—
—

SnO₂
0.11
0.11
0.10
0.11
0.05
0.06

Fe₂O₃
—
—
—
—
—
0.07

Cl
0.02
0.03
0.02
0.03
0.02
0.02

Au
0.0005
0.0007
0.0009
0.0008
0.0007
0.0005

R₂O
18.32
17.46
16.54
16.58
16.55
16.78

R₂O − Al₂O₃
3.86
2.98
2.02
1.02
1.01
1.03

5.72*Al₂O₃−
−578.32
−550.38
−528.71
−523.70
−522.93
−529.18

21.4*ZnO −

2.5*P₂O₃−

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

Composition
C7
C8
C9
CIO
CH
C12

SiO₂
61.24
60.87
60.67
60.54
60.56
60.70

Al₂O₃
15.66
16.54
16.47
16.52
16.36
16.27

B₂O₃
5.89
5.85
5.84
5.99
6.04
6.01

Li₂O
11.15
11.08
10.97
11.06
11.13
11.12

Na₂O
5.38
5.34
5.35
5.27
5.28
5.28

K₂O
0.19
0.19
0.19
0.20
0.20
0.19

MgO
0.01
0.02
0.02
0.02
0.02
0.02

CaO
—
—
—
—
—
—

ZnO
—
—
—
—
—
—

ZrO₂
0.32
—
0.31
0.32
0.32
0.32

SnO₂
0.05
0.06
0.05
0.05
0.05
0.05

Fe₂O₃
0.07
—
0.07
—
—
—

Cl
0.02
0.02
0.02
—
—
—

Au
0.0005
0.0007
0.0005
0.0007
0.0008
0.0008

R₂O
16.72
16.61
16.51
16.53
16.61
16.59

R₂O − Al₂O₃
1.06
0.07
0.04
0.01
0.25
0.32

5.72*Al₂O₃−
−527.52
−518.65
−515.27
−518.94
−523.37
−522.85

21.4*ZnO −

2.5*P₂O₃−

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

Composition
C13
C14
C15
C16
C17
C18

SiO₂
60.64
60.64
63.76
65.01
65.86
67.01

Al₂O₃
16.07
15.42
14.39
14.29
14.28
13.47

B₂O₃
6.01
6.04
5.86
5.09
4.36
4.13

Li₂O
11.37
11.50
11.02
10.96
10.95
10.92

Na₂O
5.28
5.76
4.24
4.23
4.22
4.20

K₂O
0.19
0.19
0.14
0.14
0.14
0.14

MgO
0.02
0.02
0.04
0.03
0.02
0.02

CaO
—
—
—
—
0.01
0.01

ZnO
—
—
0.02
—
—
—

ZrO₂
0.32
0.32
0.48
0.20
0.10
0.04

SnO₂
0.05
0.05
0.04
0.04
0.04
0.04

Fe₂O₃
—
—
—
—
—
—

Cl
—
—
—
—
—
—

Au
0.0008
0.0008
0.0011
0.0010
0.0010
0.0010

R₂O
16.84
17.45
15.41
15.33
15.31
15.26

R₂O − Al₂O₃
0.77
2.03
1.01
1.04
1.03
1.79

5.72*Al₂O₃−
−532.74
−552.69
−503.22
−488.03
−475.55
−474.86

21.4*ZnO −

2.5*P₂O₃−

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

Composition
C19
C20
C21
C22
C23

SiO₂
67.59
67.75
67.84
67.89
67.63

Al₂O₃
13.13
13.01
12.96
12.99
13.15

B₂O₃
3.93
3.92
3.92
3.92
3.94

Li₂O
10.94
10.91
10.88
10.77
10.69

Na₂O
4.17
4.17
4.17
4.20
4.21

K₂O
0.14
0.14
0.14
0.14
0.15

MgO
0.02
0.02
0.01
0.01
0.01

CaO
0.01
0.01
0.01
0.01
0.10

ZnO
0.00
0.00
0.00
0.00
0.00

ZrO₂
0.02
0.02
0.01
0.01
0.02

SnO₂
0.04
0.04
0.04
0.04
0.04

Fe₂O₃
0.00
0.00
0.00
0.00
0.00

Cl
0.00
0.00
0.00
0.00
0.00

Au
0.0011
0.0014
0.0016
0.0006
0.0001

R₂O
15.25
15.22
15.20
15.11
15.04

R₂O − Al₂O₃
2.13
2.21
2.24
2.12
1.90

5.72*Al₂O₃−
−473.41
−473.02
−472.32
−468.73
−468.03

21.4*ZnO −

2.5*P₂O₃−

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

Composition
C24
C25
C26

SiO₂
63.76
65.86
67.59

Al₂O₃
14.39
14.28
13.13

B₂O₃
5.86
4.36
3.93

Li₂O
11.02
10.95
10.94

Na₂O
4.24
4.22
4.17

K₂O
0.14
0.14
0.14

MgO
0.04
0.02
0.02

CaO
0.00
0.00
0.00

ZnO
0.02
0.00
0.00

ZrO₂
0.48
0.10
0.02

SnO₂
0.04
0.04
0.04

Fe₂O₃
0.00
0.00
0.00

Cl
0.00
0.00
0.00

Au
8.3 × 10⁻⁶
7.7 × 10⁻⁶
8.0 × 10⁻⁶

R₂O
15.40
15.31
15.25

R₂O − Al₂O₃
1.01
1.03
2.12

5.72*Al₂O₃−
−503.30
−475.27
−473.20

21.4*ZnO −

2.5*P₂O₃−

35*Li₂O −

16.6*B₂O₃−

20.5*MgO −

23.3*Na₂O −

27.9*SrO −

18.5*K₂O −

26.3*CaO

Referring now to Table 12, example glass articles A1-A52 were formed from example compositions C2-C9 and C15-C23 shown in Table 11 and were subjected to heat treatment at the temperature and for the period of time shown in Table 12. The transmittance color coordinate in the CIELAB color space, as measured at an article thickness of 1.33 mm under F2 illumination and a 10° standard observer angle, and the observable color of the resultant colored glass articles are shown in Table 12.

TABLE 12

Glass Article
A1
A2
A3
A4
A5
A6

Composition
C18
C19
C20
C21
C22
C23

Heat treatment
550
550
550
550
550
550

temp. (° C.)

Heat treatment
8
8
8
8
8
8

time (hr.)

L*
87.39
88.12
86.98
86.12
91.39
96.68

a*
7.72
7.34
8.39
9.23
4.78
0.00

b*
1.87
4.93
8.07
9.58
3.81
0.80

Observable color
orange
orange
orange
orange
orange
light

yellow

Glass Article
A7
A8
A9
A10
A11
A12

Composition
C15
C16
C17
C18
C18
C19

Heat treatment
575
575
575
575
575
575

temp. (° C.)

Heat treatment
2
2
2
8
2
8

time (hr.)

L*
83.48
92.46
85.94
88.08
91.19
88.2

a*
0.19
0.98
1.68
8.15
3.07
7.80

b*
−6.06
−0.93
−4.63
5.71
−0.47
6.51

Observable color
blue
purple
purple
orange
pink
orange

Glass Article
A13
A14
A15
A16
A17
A18

Composition
C19
C20
C20
C21
C22
C22

Heat treatment
575
575
575
575
575
575

temp. (° C.)

Heat treatment
2
8
2
8
8
2

time (hr.)

L*
89.96
86.7
86.9
85.72
90.59
90.98

a*
4.42
8.49
8.50
8.98
5.51
4.33

b*
−0.06
9.06
6.59
10.40
4.77
1.19

Observable color
pink
orange
orange
orange
orange
red

Glass Article
A19
A20
A21
A22
A23
A24

Composition
C23
C23
C15
C16
C17
C18

Heat treatment
575
575
600
600
600
600

temp. (° C.)

Heat treatment
2
8
2
2
2
2

time (hr.)

L*
96.73
95.89
82.63
83
83.43
88.03

a*
0.03
0.63
3.35
4.27
5.48
8.35

b*
0.75
1.84
−6.62
−6.11
−5.49
4.10

Observable color
yellow
peach
purple
purple
purple
orange

Glass Article
A25
A26
A27
A28
A29
A30

Composition
C19
C20
C22
C23
C2
C3

Heat treatment
600
600
600
600
625
625

temp. (° C.)

Heat treatment
2
2
2
2
2
2

time (hr.)

L*
87.99
86.66
90.23
96.4
89.29
87.6

a*
8.34
8.91
5.53
0.28
5.14
7.22

b*
5.45
8.48
3.52
1.24
9.97
10.51

Observable color
orange
orange
orange
light
orange
red

orange

Glass Article
A31
A32
A33
A34
A35
A36

Composition
C4
C5
C6
C7
C8
C9

Heat treatment
625
625
625
625
625
625

temp. (° C.)

Heat treatment
2
2
2
2
2
2

time (hr.)

L*
83
86.74
88.94
87.28
78.03
80.49

a*
11.39
9.76
6.92
9.09
5.04
6.25

b*
2.59
2.60
4.75
3.44
−9.39
−8.92

Observable color
red
red
red
red
purple
purple

Glass Article
A37
A38
A39
A40
A41
A42

Composition
C15
C16
C17
C18
C19
C20

Heat treatment
625
625
625
625
625
625

temp. (° C.)

Heat treatment
2
2
2
2
2
2

time (hr.)

L*
84.25
85.21
85.58
87.5
87.39
86.09

a*
10.89
10.87
10.81
8.98
8.76
9.27

b*
−0.89
0.55
0.90
4.56
5.39
8.00

Observable color
magenta
red
red
orange
orange
orange

Glass Article
A43
A44
A45
A46
A47
A48

Composition
C22
C23
C15
C16
C17
C18

Heat treatment
625
625
650
650
650
650

temp. (° C.)

Heat treatment
2
2
2
2
2
2

time (hr.)

L*
90.31
95.7
84.63
85.69
86.23
87.42

a*
5.73
0.89
11.19
11.18
10.85
9.14

b*
3.85
1.49
−0.12
1.22
1.47
4.40

Observable color
orange
orange
magenta
red
red
orange

Glass Article
A49
A50
A51
A52

Composition
C19
C20
C22
C23

Heat treatment
650
650
650
650

temp. (° C.)

Heat treatment
2
2
2
2

time (hr.)

L*
87.42
86.18
90.14
95.53

a*
8.84
9.28
6.00
1.04

b*
5.24
8.10
3.89
1.42

Observable color
orange
orange
orange
orange

Referring now to Table 13, example glass articles A53-A114 were formed from example compositions C1-C14 and C24-C26 shown in Table 11 and were subjected to heat treatment at the temperature and for the period of time shown in Table 13. The observable colors of the resultant colored glass articles are shown in Table 13.

TABLE 13

Glass Article
A53
A54
A55
A56
A57
A58

Composition
C1
C2
C3
C4
C5
C6

Heat treatment
550
550
550
550
550
550

temp. (° C.)

Heat treatment
2
2
2
2
2
2

time (hr.)

Observable color
red
clear, red
clear, red
clear
clear
red

Glass Article
A59
A60
A61
A62
A63
A64

Composition
C7
C8
C9
C10
C11
C12

Heat treatment
550
550
550
550
550
550

temp. (° C.)

Heat treatment
2
2
2
2
2
2

time (hr.)

Observable color
red
clear
clear, pink
clear
clear
clear

Glass Article
A65
A66
A67
A68
A69
A70

Composition
C13
C14
C24
C1
C2
C3

Heat treatment
550
550
550
575
575
575

temp. (° C.)

Heat treatment
2
2
8
2
2
2

time (hr.)

Observable color
clear
clear,
purple
orange
orange
red

purple

Glass Article
A71
A72
A73
A74
A75
A76

Composition
C4
C5
C6
C7
C8
C9

Heat treatment
575
575
575
575
575
575

temp. (° C.)

Heat treatment
2
2
2
2
2
2

time (hr.)

Observable color
purple
purple
red
red
clear, red
clear, pink

Glass Article
A77
A78
A79
A80
A81
A82

Composition
C10
C11
C12
C13
C14
C24

Heat treatment
575
575
575
575
575
575

temp. (° C.)

Heat treatment
2
2
2
2
2
2

time (hr.)

Observable color
clear,
clear,
clear,
clear,
clear, red
purple

purple
purple
purple
purple

Glass Article
A83
A84
A85
A86
A87
A88

Composition
C25
C26
C24
C25
C1
C2

Heat treatment
575
575
575
575
600
600

temp. (° C.)

Heat treatment
2
2
8
8
2
2

time (hr.)

Observable color
purple
red
red
red
orange
orange

Glass Article
A89
A90
A91
A92
A93
A94

Composition
C3
C4
C5
C6
C7
C8

Heat treatment
600
600
600
600
600
600

temp. (° C.)

Heat treatment
2
2
2
2
2
2

time (hr.)

Observable color
red
purple
purple
red
red
purple

Glass Article
A95
A96
A97
A98
A99
A100

Composition
C9
C10
C11
C12
C13
C14

Heat treatment
600
600
600
600
600
600

temp. (° C.)

Heat treatment
2
2
2
2
2
2

time (hr.)

Observable color
purple
purple
purple
purple
purple
orange

Glass Article
A101
A102
A103
A104
A105
A106

Composition
C24
C25
C26
C24
C25
C26

Heat treatment
600
600
600
625
625
625

temp. (° C.)

Heat treatment
2
2
2
2
2
2

time (hr.)

Observable color
purple
red
red
red
red
red

Glass Article
A107
A108
A109
A110
A111
A112

Composition
C10
C11
C12
C13
C14
C24

Heat treatment
650
650
650
650
650
650

temp. (° C.)

Heat treatment
2
2
2
2
2
2

time (hr.)

Observable color
purple
purple
clear,
purple
orange
red

purple

Glass Article
A113
A114

Composition
C25
C26

Heat treatment
650
650

temp. (° C.)

Heat treatment
2
2

time (hr.)

Observable color
red
red

Referring now to FIGS. 7 and 8, plots show the relationship of R₂O—Al₂O₃and a* and b*, respectively, of example glass articles A29-A44. As shown in FIG. 7, a* was a positive number, regardless of the R₂O—Al₂O₃value, thereby resulting in observable colors towards red side of the CIELAB color space. As shown in FIG. 8, as R₂O—Al₂O₃increased, b* increased, thereby shifting the observable colors from blue to yellow. For example, example glass articles A35 and A36, formed from example compositions C8 and C9 having an analyzed R₂O—Al₂O₃of 0.07 mol % and 0.04 mol %, respectively, had a b* of −9.39 and −8.92, respectively, resulting in observably purple glass articles. Example glass articles A29 and A30, formed from example glass compositions C2 and C3 having an analyzed R₂O—Al₂O₃of 2.98 mol % and 2.02 mol %, respectively, had a b* of 9.97 and 10.51, respectively, resulting in an observably orange glass article and an observably red glass article.

Moreover, example glass articles A33 and A34, formed from example glass compositions C6 and C7 including Fe₂O₃and ZrO₂, respectively, had an observable red color.

As indicated by Tables 12 and 13 and FIGS. 7 and 8, the analyzed R₂O—Al₂O₃may be adjusted, additional components may be added to the glass composition, and the glass article may be subjected to a certain heat treatment to provide a desired colored glass article.

Table 14 shows example glass compositions (in terms of mol %) containing Cr₂O₃as a colorant and the transmittance color coordinate in the CIELAB color space, as measured at an article thickness of 1.5 mm under F2 illumination and a 10° standard observer angle, of the resultant colored glass articles.

TABLE 14

Example
Cr-1
Cr-2
Cr-3
Cr-4
Cr-5
Cr-6

SiO₂
58.78
58.30
58.52
58.97
58.26
58.52

Al₂O₃
16.68
16.35
16.50
16.41
16.38
16.56

B₂O₃
5.93
5.93
6.01
5.98
5.93
6.04

Li₂O
11.74
9.86
9.93
9.89
9.85
9.89

Na₂O
6.26
4.25
4.27
4.27
4.26
4.30

K₂O
0.48
0.48
0.48
0.49
0.48
0.49

MgO
0.02
2.91
2.95
2.91
2.94
2.93

CaO
0.01
0.01
0.01
0.01
0.01
0.02

ZnO
—
1
1.01
1
1
1.05

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01

NiO
—
—
0.023
0.012
0.043
0.089

Co₃O₄
—
0.001
0.002
0.002
0.03
0.048

CuO
—
0.83
0.233
0.037
0.785
0.044

Cr₂O₃
0.098
0.068
0.038
0.002
0.016
0.008

R₂O
18.48
14.59
14.68
14.65
14.59
14.68

R′O
0.03
3.92
3.97
3.92
3.95
4

R₂O + R′O—Al₂O₃
1.83
2.16
2.15
2.16
2.16
2.12

MgO + ZnO
0.02
3.91
3.96
3.91
3.94
3.98

Al₂O₃+ MgO + ZnO
16.7
20.26
20.46
20.32
20.32
20.54

Transmittance Color Coordinate

L*
83.78
77.06
85.88
94.99
66.99
62.17

a*
−12.60
−26.24
−9.49
−0.45
−10.12
−2.12

b*
62.26
8.74
6.26
0.17
−14.19
−20.39

Example
Cr-7
Cr-8
Cr-9
Cr-10
Cr-11
Cr-12

SiO₂
57.09
59.21
58.44
58.12
59.20
58.36

Al₂O₃
16.10
16.64
16.21
16.56
16.58
16.11

B₂O₃
5.90
5.62
5.70
6.07
5.67
5.69

Li₂O
9.68
11.75
11.56
11.83
11.82
11.6

Na₂O
4.21
6.18
6.09
6.21
6.16
6.07

K₂O
0.47
0.47
0.47
0.48
0.45
0.46

MgO
2.86
0.02
0.02
0.02
0.02
0.02

CaO
0.02
0.01
0.01
0.01
0.01
0.01

ZnO
0.98
—
—
—
—
—

TiO₂
—
0.01
—
0.01
0.01
—

NiO
0.014
0.078
0.039
0.071
—
—

Co₃O₄
0.058
0.001
0.001
0.002
0.002
0.038

CuO
2.598
0.002
1.351
0.563
0.086
1.583

Cr₂O₃
0.006
0.009
0.102
0.051
0.002
0.051

R₂O
14.36
18.4
18.12
18.52
18.43
18.13

R′O
3.86
0.03
0.03
0.03
0.03
0.03

R₂O + R′O—Al₂O₃
2.12
1.79
1.94
1.99
1.88
2.05

MgO + ZnO
3.84
0.02
0.02
0.02
0.02
0.02

Al₂O₃+ MgO + ZnO
19.94
16.66
16.23
16.58
16.6
16.13

Transmittance Color Coordinate

L*
38.41
89.31
89.27
76.84
94.52
41.28

a*
−14.36
−0.65
−0.77
−14.83
−1.14
−18.17

b*
−13.36
17.15
17.45
11.73
−2.04
−13.89

Example
Cr-13
Cr-14
Cr-15
Cr-16
Cr-17
Cr-18

SiO₂
58.03
58.39
58.48
58.45
58.58
58.71

Al₂O₃
16.57
16.49
16.53
16.49
16.42
16.54

B₂O₃
6.03
6.01
6.09
6.04
5.97
5.99

Li₂O
11.93
10.02
10.08
10.04
10.5
10.48

Na₂O
6.23
4.28
4.26
4.25
4.71
4.76

K₂O
0.48
0.48
0.49
0.48
0.48
0.49

MgO
0.02
2.95
2.94
2.94
0.96
0.97

CaO
0.01
0.02
0.01
0.02
0.98
0.98

ZnO
—
1.01
1.01
1.01
0.99
1.02

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01

NiO
0.093
0.021
—
0.082
0.019
—

Co₃O₄
0.072
0.002
0.002
0.048
0.002
0.002

CuO
0.516
0.278
0.091
0.137
0.339
0.054

Cr₂O₃
0.012
0.036
0.001
0.006
0.039
0.001

R₂O
18.64
14.78
14.83
14.77
15.69
15.73

R′O
0.03
3.98
3.96
3.97
2.93
2.97

R₂O + R′O-Al₂O₃
2.1
2.27
2.26
2.25
2.2
2.16

MgO + ZnO
0.02
3.96
3.95
3.95
1.95
1.99

Al₂O₃+ MgO + ZnO
16.59
20.45
20.48
20.44
18.37
18.53

Transmittance Color Coordinate

L*
38.93
85.89
95.05
62.68
85.25
95.29

a*
1.10
−9.54
−0.84
−2.13
−10.39
−0.68

b*
−44.38
5.68
−0.62
−20.72
6.20
−0.90

Example
Cr-19

SiO₂
58.51

Al₂O₃
16.49

B₂O₃
6.06

Li₂O
10.47

Na₂O
4.76

K₂O
0.49

MgO
0.97

CaO
0.99

ZnO
1.01

TiO₂
0.01

NiO
0.085

Co₃O₄
0.048

CuO
0.111

Cr₂O₃
0.005

R₂O
15.72

R′O
2.97

R₂O + R′O—Al₂O₃
2.2

MgO + ZnO
1.98

Al₂O₃+ MgO + ZnO
18.47

Transmittance Color Coordinate

L*
61.08

a*
−2.34

b*
−22.51

As indicated by the example glass compositions and colored glass articles in Table 14, the glass compositions described herein improve Cr₂O₃solubility to form colored glass articles having the desired color. For example, example glass composition Cr-1 including 0.098 mol % Cr₂O₃formed a colored glass article having a transmittance color coordinate in the CIELAB color space of L*=83.78, a*=−12.60, and b*=62.26.

As further indicated by the example glass compositions and colored glass articles in Table 14, adding other colorants in addition to Cr₂O₃as described herein allows different color gamuts to be achieved. For example, example glass composition Cr-2 including 0.068 mol % Cr₂O₃, 0.001 mol % Co₃O₄, and 0.83 mol % CuO formed a colored glass article have a transmittance color coordinate in the CIELAB color space of L*=77.06, a*=−26.24, and b*=8.74. Example glass composition Cr-3, including 0.038 mol % Cr₂O₃, 0.023 mol % NiO, 0.002 mol % Co₃O₄, and 0.233 mol % CuO formed a colored glass article have a transmittance color coordinate in the CIELAB color space of L*=85.88, a*=−9.40, and b*=6.26.

Referring now to FIGS. 9-32, projected color gamuts were modeled for glass compositions containing Cr₂O₃as a colorant. The modeled compositions included Cr₂O₃as the sole colorant as well as Cr₂O₃in combination with NiO, Co₃O₄, CuO, and various combinations thereof.

Referring now to FIGS. 9-11, a projected color gamut for a glass composition including only Cr₂O₃as a colorant is shown. As illustrated, a single colorant generates a line in the CIELAB color space. The points along the line correspond to different levels of Cr₂O₃concentration from 0 mol % to 2 mol %. The arrows indicate the directions of increasing concentration. The Cr₂O₃color gamut projects that a colored glass article having greater than or equal to 0 mol % and less than or equal to 2 mol % Cr₂O₃may have a transmittance color coordinate in the CIELAB color space, as measured at an article thickness of 1.5 mm under F2 illumination and a 10° standard observer angle, of L* greater than or equal to 0 and less than or equal to 100, a* greater than or equal to −18 and less than or equal to 0, and b* greater than or equal to 0 and less than or equal to 82.

Different color gamuts may be achieved by including other colorants in addition to Cr₂O₃. Referring now to FIGS. 12-14, a projected color gamut for a glass composition including Cr₂O₃and NiO as colorants is shown. As illustrated, two colorants generate a surface in the CIELAB color space. The Cr₂O₃/NiO color gamut projects that a colored glass article having greater than or equal to 0 mol % and less than or equal to 2 mol % Cr₂O₃and greater than or equal to 0 mol % and less than or equal to 4 mol % NiO may have a transmittance color coordinate in the CIELAB color space, as measured at an article thickness of 1.5 mm under F2 illumination and a 10° standard observer angle, of L* greater than or equal to 0 and less than or equal to 100, a* greater than or equal to −18 and less than or equal to 18, and b* greater than or equal to 0 and less than or equal to 82.

Referring now to FIGS. 15-17, a projected color gamut for a glass composition including Cr₂O₃and Co₃O₄as colorants is shown. As illustrated, two colorants generate a surface in the CIELAB color space. The Cr₂O₃/Co₃O₄color gamut projects that a colored glass article having greater than or equal to 0 mol % and less than or equal to 2 mol % Cr₂O₃and greater than or equal to 0 mol % and less than or equal to 2 mol % Co₃O₄may have a transmittance color coordinate in the CIELAB color space, as measured at an article thickness of 1.5 mm under F2 illumination and a 10° standard observer angle, of L* greater than or equal to 0 and less than or equal to 100, a* greater than or equal to −20 and less than or equal to 60, and b* greater than or equal to −90 and less than or equal to 85.

Referring now to FIGS. 18-20, a projected color gamut for a glass composition including Cr₂O₃and CuO as colorants is shown. As illustrated, two colorants generate a surface in the CIELAB color space. The Cr₂O₃/CuO color gamut projects that a colored glass article having greater than or equal to 0 mol % and less than or equal to 2 mol % Cr₂O₃and greater than or equal to 0 mol % and less than or equal to 20 mol % CuO may have a transmittance color coordinate in the CIELAB color space, as measured at an article thickness of 1.5 mm under F2 illumination and a 10° standard observer angle, of L* greater than or equal to 0 and less than or equal to 100, a* greater than or equal to −35 and less than or equal to 0, and b* greater than or equal to 0 and less than or equal to 82.

Referring now to FIGS. 21-23, a projected color gamut for a glass composition including Cr₂O₃, NiO, and CuO as colorants is shown. As illustrated, three colorants create a volume in the CIELAB color space. The Cr₂O₃/NiO/CuO color gamut projects that a colored glass article having greater than or equal to 0 mol % and less than or equal to 2 mol % Cr₂O₃, greater than or equal to 0 mol % and less than or equal to 4 mol % NiO, and greater than or equal to 0 mol % and less than or equal to 20 mol % CuO may have a transmittance color coordinate in the CIELAB color space, as measured at an article thickness of 1.5 mm under F2 illumination and a 10° standard observer angle, of L* greater than or equal to 0 and less than or equal to 100, a* greater than or equal to −35 and less than or equal to 20, and b* greater than or equal to 0 and less than or equal to 75.

Referring now to FIGS. 24-26, a projected color gamut for a glass composition including Cr₂O₃, NiO, and Co₃O₄as colorants is shown. As illustrated, three colorants create a volume in the CIELAB color space. The Cr₂O₃/NiO/Co₃O₄color gamut projects that a colored glass article having greater than or equal to 0 mol % and less than or equal to 2 mol % Cr₂O₃, greater than or equal to 0 mol % and less than or equal to 4 mol % NiO, and greater than or equal to 0 mol % and less than or equal to 2 mol % Co₃O₄may have a transmittance color coordinate in the CIELAB color space, as measured at an article thickness of 1.5 mm under F2 illumination and a 10° standard observer angle, of L* greater than or equal to 0 and less than or equal to 100, a* greater than or equal to −15 and less than or equal to 65, and b* greater than or equal to −90 and less than or equal to 80.

Referring now to FIGS. 27-29, a projected color gamut for a glass composition including Cr₂O₃, CuO, and Co₃O₄as colorants is shown. As illustrated, three colorants create a volume in the CIELAB color space. The Cr₂O₃/CuO/Co₃O₄color gamut projects that a colored glass article having greater than or equal to 0 mol % and less than or equal to 2 mol % Cr₂O₃, greater than or equal to 0 mol % and less than or equal to 20 mol % CuO, and greater than or equal to 0 mol % and less than or equal to 2 mol % Co₃O₄may have a transmittance color coordinate in the CIELAB color space, as measured at an article thickness of 1.5 mm under F2 illumination and a 10° standard observer angle, of L* greater than or equal to 0 and less than or equal to 100, a* greater than or equal to −35 and less than or equal to 60, and b* greater than or equal to −90 and less than or equal to 80.

Referring now to FIGS. 30-32, a projected color gamut for a glass composition including Cr₂O₃, NiO, CuO, and Co₃O₄as colorants is shown. As illustrated, four colorants create an overlapping volume in the CIELAB color space. The Cr₂O₃/NiO/CuO/Co₃O₄color gamut projects that a colored glass article having greater than or equal to 0 mol % and less than or equal to 2 mol % Cr₂O₃, greater than or equal to 0 mol % and less than or equal to 4 mol % NiO, greater than or equal to 0 mol % and less than or equal to 20 mol % CuO, and greater than or equal to 0 mol % and less than or equal to 2 mol % Co₃O₄may have a transmittance color coordinate in the CIELAB color space, as measured at an article thickness of 1.5 mm under F2 illumination and a 10° standard observer angle, of L* greater than or equal to 0 and less than or equal to 100, a* greater than or equal to −35 and less than or equal to 60, and b* greater than or equal to −90 and less than or equal to 80.

Tables 15 and 16 show example glass compositions (in terms of mol %) containing Ag as a colorant.

TABLE 15

Example

(mol %)
Ag-1
Ag-2
Ag-3
Ag-4
Ag-5
Ag-6
Ag-7
Ag-8
Ag-9
Ag-10
Ag-11
Ag-12
Ag-13
Ag-14
Ag-15

SiO₂
59.55
60.05
60.55
60.00
59.95
59.90
60.10
60.00
59.85
60.16
60.09
59.79
59.47
59.45
57.55

Al₂O₃
16.50
16.50
16.50
16.50
16.50
16.50
16.50
16.50
16.50
15.90
15.93
15.89
15.82
16.50
16.50

B₂O₃
6.00
6.00
6.00
6.00
6.00
6.00
6.00
6.00
6.00
6.08
6.06
6.04
5.99
6.00
6.00

Li₂O
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
11.99
11.97
11.97
11.92
12.00
12.00

Na₂O
5.70
5.20
4.70
5.20
5.20
5.20
5.20
5.20
5.20
5.41
5.41
5.89
6.37
5.50
6.50

K₂O
—
—
—
—
—
—
—
—
—
0.20
0.20
0.20
0.19
0.20
0.20

SnO₂
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.11
0.11
0.11
0.10
0.20
0.10

Ag
0.15
0.15
0.15
0.15
0.15
0.15
0.10
0.10
0.25
0.15
0.25
0.12
0.13
0.15
0.15

CeO₂
—
—
—
0.05
0.10
0.15
—
0.10
0.10
—
—
—
—
—
—

Nd₂O₃
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1.00

Er₂O₃
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—

R₂O—Al₂O₃
1.20
0.70
0.20
0.70
0.70
0.70
0.70
0.70
0.70
1.70
1.64
2.16
2.66
1.20
2.20

TABLE 16

Example

(mol %)
Ag-16
Ag-17
Ag-18
Ag-19
Ag-20
Ag-21
Ag-22
Ag-23
Ag-24
Ag-25
Ag-26
Ag-27
Ag-28
Ag-29

SiO₂
57.55
59.1
59.05
59.41
59.31
59.36
59.26
58.91
58.81
59.41
59.01
58.55
58.7
59.7

Al₂O₃
16.50
16.00
16.00
15.97
15.97
15.97
15.97
15.97
15.97
15.97
15.89
16.5
16.4
16.5

B₂O₃
6.00
6.00
6.00
6.00
6.00
6.00
6.00
6.00
6.00
6.00
6.00
6
6
6

Li₂O
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12
12
12

Na₂O
6.50
6.50
6.50
6.17
6.17
6.17
6.17
6.67
6.67
6.17
6.65
6.5
6.5
5.5

K₂O
0.20
0.20
0.20
0.20
0.20
0.20
0.20
0.20
0.20
0.20
0.20
0.2
0.2
0.2

SnO₂
0.10
0.10
0.10
0.10
0.20
0.10
0.20
0.10
0.20
0.10
0.10
0.1
0.1
0.1

Ag
0.15
0.10
0.15
0.15
0.15
0.20
0.20
0.15
0.15
0.15
0.15
0.15
0.15
0.15

CeO₂
—
—
—
—
—
—
—
—
—
—
—
—
—

Nd₂O₃
—
—
—
—
—
—
—
—
—
—
—
—
—

Er₂O₃
1.00
—
—
—
—
—
—
—
—
—
—
—
—

R₂O—Al₂O₃
2.20
2.70
2.70
2.40
2.40
2.40
2.40
2.90
2.90
2.40
2.96
2.2
2.3
1.2

The exemplary glass compositions of Tables 15 and 16 were used to produce glass coupons. These glass coupons were inserted into pre-heated, ambient-air electric ovens, held for a desired amount of time, and cooled in air to produce colored glass coupons. It should be noted that some glasses were heated at a particular ramp rate and/or cooled at a controlled rate; however, it was determined that neither the ramp rate nor cooling rate affected color generation.

Plots of CIELAB spaces of colored glass coupons produced from Examples Ag-1 and Ag-9 are depicted in FIG. 33A (a* vs. L*), FIG. 33B (b* vs. L*), and FIG. 33C (a* vs. b*). Sample sets having thicknesses of 0.6 mm, 1.33 mm, and 2.06 mm were made from each composition and the samples were heat treated at various heat treatment times (575° C., 600° C., 625° C., 650° C.) and various heat treatment times (1 hour, 2 hours) to produce colored glass articles having the CIELAB L*, a*, b* values indicated in FIGS. 33A-33C.

Plots of projected CIELAB spaces of colored glass coupons produced from Examples Ag-10-Ag-12 are depicted in FIG. 34A (a* vs. L*), FIG. 34B (b* vs. L*), and FIG. 34C (a* vs. b*). Sample sets having thicknesses of 0.6 mm, 1.33 mm, and 2.06 mm were made from each composition and the samples were heat treated at various heat treatment times (575° C., 600° C., 625° C., 650° C.) and various heat treatment times (1 hour, 2 hours) to produce colored glass articles having the CIELAB L*, a*, b* values indicated in FIGS. 34A-34C.

FIGS. 35 and 36 depict the absorbance spectra (determined from the transmittance spectra T where the absorbance A=log₁₀(1/T)) of colored glass coupons produced from Examples Ag-1 and Ag-9, respectively. Specifically, the absorbance spectra of glass coupons formed from the compositions of Examples Ag-1 and Ag-9 were collected from coupons in: as-made condition (no heat treatment); after exposure to a heat treatment of 600° C. for 2 hours; after exposure to a heat treatment of 600° C. for 3 hours; after exposure to a heat treatment of 625° C. for 2 hours; after exposure to a heat treatment of 625° C. for 3 hours; and after exposure to a heat treatment of 650° C. for 3 hours. As shown in FIGS. 35 and 36, the absorbance spectra varied considerably with changes in heat treatment temperature and heat treatment time.

FIGS. 37, 38 and 39 depict the absorbance spectra of colored glass coupons produced from Examples Ag-10-Ag-12, respectively. Specifically, the absorbance spectra of glass coupons formed from the compositions of examples Ag-10-Ag-12 were collected from coupons in: after exposure to a heat treatment of 575° C. for 2 hours; after exposure to a heat treatment of 600° C. for 1 hours; after exposure to a heat treatment of 600° C. for 2 hours; after exposure to a heat treatment of 600° C. for 3 hours; after exposure to a heat treatment of 625° C. for 1 hour; after exposure to a heat treatment of 630° C. for 4 hours; and after exposure to a heat treatment of 650° C. for 0.5 hour. As shown in FIGS. 37-39, the absorbance spectra varied considerably with changes in heat treatment temperature and heat treatment time.

FIGS. 40A-40C are plots of CIELAB spaces of colored glass coupons produced from Example Ag-16 containing erbium. Specifically FIG. 40A is a plot of a* vs. L*, FIG. 40B is a plot b* vs. L*, and FIG. 40C is a plot of a* vs. b*. Sample sets having thicknesses of ˜0.6 mm, ˜1.33 mm, and ˜2.06 mm were made from the composition and heat treated at various heat treatment temperatures and various heat treatment times (as indicated in Table 17) to produce colored glass articles having the CIELAB L*, a*, b* values indicated in FIGS. 40A-40C. The CIELAB space plots indicate that an entirely new range of colors can be achieved by adding erbium to the composition. FIG. 41 depicts the absorbance spectra of example Ag-16 in as-made condition (prior to heat treatment); after heat treatment at 565° C. for 15 minutes; and after heat treatment at 575° C. after 20 minutes.

TABLE 17

Heat Treatment

(Temp (° C.)/

Time (minutes)/
Thickness

Example
Ramp Rate (° C./min))
(mm)
L*
a*
b*

Ag-16
as made
0.60
95.09
4.58
−1.73

Ag-16
575/20/10
0.57
94.76
3.32
1.91

Ag-16
565/15/10
0.60
95
4.26
−0.83

Ag-16
as made
1.34
93.7
8.44
−3.23

Ag-16
575/20/10
1.32
92.03
3.62
13.15

Ag-16
565/15/10
1.32
93.51
7.83
−1.61

Ag-16
as made
2.06
92.66
10.98
−4.12

Ag-16
575/20/10
2.03
91.28
7.96
6.77

Ag-16
565/15/10
2.04
92.25
9.9
−0.62

FIGS. 42A-42C are plots of CIELAB spaces of colored glass coupons produced from Example Ag-13. In particular, coupons of glass formed from the composition of Example Ag-13 includes R₂O—Al₂O₃values in the range between 2.5 and 3 mol %, specifically 2.66 mol %. The samples were heat treated at various heat treatment temperatures and heat treatment times to produce colored glass articles having a range of colors including green, brown, maroon, purple and pink, as indicated in the CIELAB spaces of FIGS. 42A-42C.

FIG. 43 is the absorbance spectra of Example Ag-13 for heat treatments at 635° C. for 20 minutes; 635° C. for 30 minutes; and 635° C. for 40 minutes. The heat treatment conditions produced a colored glass article that was green in color. As shown in FIG. 43 the absorbance spectra had two distinct peaks arising from the formation of anisotropic silver particles that support two distinct plasmon resonances. FIGS. 44A-44C are TEM micrographs of the anisotropic silver particles in the green glass formed from Example Ag-13 and show the random orientation of the anisotropic particles (FIG. 44A) and that the silver particles have an aspect ratio greater than 1 (FIGS. 44B and 44C).

As discussed herein, the R₂O—Al₂O₃value of a composition influences both isotropic and anisotropic particle formation during heat treatment and hence the color of the resultant glass. When R₂O—Al₂O₃<<1 (i.e., 0.2 mol % or less), virtually no color is formed in the glass upon heat treatment. This is demonstrated by Example Ag-3, which has an R₂O—Al₂O₃value of 0.2 mol %. Irrespective of heat treatment, the glass of Example Ag-3 remained nearly colorless and transparent after heat treatment. However, when the R₂O—Al₂O₃value is increased to 0.7 mol % (as with glasses formed from Example Ag-2) and then to 1.2 mol % (as with glasses formed from Example Ag-1), a progressively broader and more saturated range of colors were produced by heat treatment.

Referring now to FIG. 45, a transmittance spectrum is shown for 1.3 mm coupons of glass formed from Example Ag-1 and heat treated at the same heat treatment temperature (600° C.) for different heat treatment times (1, 2, or 3 hours). The different heat treatment conditions yielded colored glass articles of different colors (yellow (solid line in FIG. 45), orange (dotted line in FIG. 45), and red (dashed line in FIG. 45), respectively), each of which had different transmittance spectra over the visible light range, as indicated in FIG. 45, with yellow samples being the most transparent and the red samples the least.

Referring now to FIG. 46, a transmittance spectrum is shown for a 1.3 mm coupon of glass formed from Example Ag-1 and heat treated at a heat treatment temperature of 650° C. for a heat treatment time of 1 hour, producing a colored glass article that was brown in color. As noted herein, colored glass articles that are brown in color can be produced by heat treatment at temperatures between 640° C. and 660° C. for heat treatment times between 30 and 90 minutes.

Referring now to FIG. 47, a transmittance spectrum is shown for a 1.3 mm coupon of glass formed from Example Ag-21 and heat treated with an initial heat treatment of 450° C. for 1 our followed by a second heat treatment of 635° C. for 1 hour, producing a colored glass article that was purple in color. It was determined that the initial heat treatment was not needed to produce color in the sample. As noted herein, colored glass articles that are purple in color can be produced by heat treatment at temperatures between 625° C. and 650° C. for heat treatment times between 30 and 90 minutes.

Referring now to Table 18 and FIG. 48, colored glass articles in the form of glass coupons were produced from the glass compositions of Tables 15 and 16. The glass coupons had thicknesses from ˜0.5 mm to ˜1.4 mm and were heat treated at various times and temperatures (as specified in Table 18) to produce colored glass articles with different color hues. PHCFR means that the glass coupon was placed directly into a pre-heated furnace, held for the indicated time, at which point the furnace was switched off and the glass coupon was cooled in the furnace at the cooling rate of the furnace (typically 2-3° C./minute). PHAC means that the glass coupon was placed directly into a pre-heated furnace, held for the indicated time, then removed and allowed to cool back to room temperature in ambient air. The CIELAB L*, a*, and b* coordinates of each colored glass article were determined and the a*, b* color coordinates were plotted as depicted in FIG. 48, where the x-axis is the a* coordinate and the y-axis is the b* coordinate. For reference, the L* coordinate (not depicted) is along an axis orthogonal to both the x-axis and the y-axis of FIG. 48 and extends through the point a*=0 and b*=0.

TABLE 18

Heat Treatment

(Temp (° C.)/

Time (hours)/
Thickness

Example
Ramp Rate (° C./min))
(mm)
L*
a*
b*

Ag-10
600/3/10
1.33
88.3
−2.26
65.85

Ag-10
600/3/10
1.29
90.44
−3.88
51.15

Ag-11
575/2/10
1.29
80.43
5.3
94.46

Ag-11
575/2/10
1.32
81.29
3.96
93.62

Ag-10
600/2/10
1.31
92.72
−2.81
29.07

Ag-10
600/2/10
1.28
92.55
−3.22
30.79

Ag-10
625/2/10
1.32
83.97
7.32
53.78

Ag-10
625/2/10
1.32
79.43
12.07
62

Ag-27
600/0.5/PHCFR
1.26
89.41
−8.22
57.36

Ag-27
600/0.75/PHCFR
1.35
83.95
−2.24
85.2

Ag-27
600/1/PHCFR
1.32
79.51
4.83
96

Ag-9
600/1/PHAC
1.31
77.86
12.16
106.74

Ag-9
600/2/PHAC
1.31
73.48
18.67
108.37

Ag-1
600/1/10
1.29
78.31
13
104.03

Ag-13
635/0.3/10
0.61
78.07
16.01
101.22

Ag-11
635/0.5/10
0.59
76.1
18.64
111.37

Ag-23
625/0.5/10
1.28
86.72
−2.66
91.23

Ag-23
450/1/10
1.25
81.15
6.31
103.91

Ag-21
575/2/10
1.16
90.82
−7.55
56.94

Ag-23
575/2/10
1.23
90.94
−9.74
52.14

Ag-23
575/3/10
1.35
83.93
−2.13
87.35

Ag-23
600/1/10
1.33
88.97
−7.73
76.89

Ag-23
625/0.75/10
1.37
77.37
13.14
107.83

Ag-23
650/0.3/10
1.32
83.6
3.6
98.53

Ag-23
615/0.5/10
1.33
90.72
−11.12
66.64

Ag-23
615/1/10
1.29
78.19
13.1
108.41

Ag-23
640/0.5/10
1.25
73.27
21.82
101.59

Ag-23
650/0.5/10
1.29
77.89
7.06
92.68

Ag-22
575/3/10
1.34
78.23
13.57
100.58

Ag-24
575/3/10
1.34
89.53
1.16
40.46

Ag-20
625/2/10
1.37
83.21
9.05
39.01

Ag-19
575/4/10
1.35
83.86
10.63
45.29

Ag-22
600/1/10
1.31
83.83
10.63
46.05

Ag-21
615/0.5/10
1.35
63.83
21.26
79.15

Ag-23
635/0.6/10
1.26
69.96
24.92
104.44

Ag-27
600/1.25/PHCFR
1.31
69.76
24.11
109.37

Ag-21
575/3/10
1.35
75.48
20.79
106.6

Ag-11
600/1/10
1.32
71.5
21.65
110.29

Ag-11
600/1/10
1.33
70.48
23.07
110.67

Ag-9
625/1/PHAC
1.31
79.96
15.43
62.16

Ag-22
575/2/10
1.20
91.99
−4.71
37.28

Ag-11
650/0.5/10
1.35
93.59
−10.87
39.72

Ag-1
600/2/PHAC
1.31
81.94
14.76
45.2

Ag-12
600/2/10
1.34
82.02
14.23
39.93

Ag-12
600/2/10
1.31
82.6
12.96
41.47

Ag-27
600/0.25/PHCFR
1.31
93.01
−7.93
33.76

Ag-11
600/3/10
1.34
53.38
36.16
89.47

Ag-12
600/3/10
1.32
71.89
26.88
63.17

Ag-12
600/3/10
1.33
72.44
26.28
61.16

Ag-11
600/2/10
1.30
61.58
30.81
101

Ag-11
600/2/10
1.32
60.37
32.13
100.26

Ag-11
625/1/10
1.33
56.78
40.08
95.88

Ag-11
625/1/10
1.35
58.43
38.04
98.02

Ag-1
600/3/PHAC
1.32
60.97
36.89
57.26

Ag-9
625/2/PHAC
1.32
61.72
41.44
100.95

Ag-9
650/1/PHAC
1.32
57.39
33.25
43.5

Ag-1
600/2/10
1.33
54.05
46.56
90.95

Ag-1
600/3/10
1.32
57.71
37.75
53.96

Ag-9
600/3/10
1.32
49.88
47.94
84.03

Ag-11
635/0.3/10
1.36
63.67
36.89
105.88

Ag-11
635/0.5/10
1.32
60
39.32
100.53

Ag-11
630/0.6/10
0.59
67.2
32.97
110.25

Ag-11
650/0.5/10
0.56
61.12
27.94
74.46

Ag-21
600/1/10
1.33
74.55
21.53
41.51

Ag-22
625/1/10
1.35
57.25
32.53
43.57

Ag-22
625/2/10
1.35
39.71
34.72
46.35

Ag-22
575/4/10
1.37
66.13
32.1
107.91

Ag-23
575/4/10
1.37
61.84
37.63
102.88

Ag-22
600/2/10
1.28
64.47
34.95
82.43

Ag-23
600/2/10
1.25
58.86
39.89
98.15

Ag-22
600/3/10
1.24
62.11
37.06
96.27

Ag-22
635/1/10
1.27
54.92
30.14
34.44

Ag-22
635/2/10
1.28
42.76
29.96
47.39

Ag-22
650/30/10
1.31
47.96
24.34
42.2

Ag-11
600/3/10
1.32
43.41
41.48
73.52

Ag-9
600 0.5/10
1.33
72.32
25.62
43.19

Ag-24
575/4/10
1.35
73.2
19.64
35.14

Ag-11
625/2/10
1.31
21.62
46.36
36.66

Ag-11
625/2/10
1.30
28.68
48.69
48.74

Ag-27
600/1.5/PHCFR
1.31
46.01
53.51
77.81

Ag-9
600/3/PHAC
1.31
37.09
48.11
62.4

Ag-9
625/3/PHAC
1.29
27.58
50.33
46.01

Ag-11
650/0.5/10
1.35
34.47
49.12
57.71

Ag-21
600/2/10
1.27
25.15
38.39
41.98

Ag-23
600/3/10
1.23
35.28
29.5
16.99

Ag-23
635/1/10
1.27
29.58
37.33
46.53

Ag-9
600/2/10
1.31
40.56
48.66
68.35

Ag-21
575/4/10
1.36
46
51.36
75.97

Ag-11
630/0.6/10
1.35
43.57
50.81
73.87

Ag-22
615/1/10
1.31
45.53
48.19
73.96

Ag-23
625/1/10
1.35
32.52
37.79
42.15

Ag-12
625/2/10
1.31
40.9
42.34
45.72

Ag-12
625/2/10
1.31
40.92
34.87
38.77

Ag-10
575/2/10
1.28
95.61
−2.57
10.47

Ag-10
575/2/10
1.33
95.5
−2.51
10.73

Ag-12
575/2/10
1.30
95.46
−4.72
15.2

Ag-12
575/2/10
1.31
95.21
−4.78
16.2

Ag-10
600/1/10
1.29
94.06
−0.93
15.68

Ag-10
600/1/10
1.29
95.27
−1.08
9.58

Ag-1
575/1/PHAC
1.30
96.33
−2.88
7.92

Ag-9
575/1/PHAC
1.33
96.22
−1.88
6.36

Ag-13
635/0.5/10
0.59
65.97
−1.78
6.53

Ag-11
635/0.5/10
1.34
95.37
−0.8
8.8

Ag-11
635/0.5/10
0.61
95.46
−0.63
8.11

Ag-11
630/0.7/10
1.36
94.65
−1.36
13.6

Ag-11
630/0.7/10
0.57
96.13
−0.64
4.96

Ag-13
630/0.7/10
1.34
17.64
−0.13
9.52

Ag-10
650/0.5/10
0.57
93.1
−2.63
16.08

Ag-11
650/0.5/10
0.58
95.83
−6.92
18.3

Ag-13
635/0.6/10
0.50
68.86
−5.21
8.63

Ag-13
635/0.6/10
0.50
69.02
−4.23
10.36

Ag-19
625/0.6/10
1.28
91.48
−0.24
1.94

Ag-19
575/2/10
1.19
96.2
−1.67
5.92

Ag-20
575/2/10
1.18
96.23
−1.37
6.17

Ag-20
575/3/10
1.36
95.79
−1.76
8.63

Ag-20
575/4/10
1.35
94.03
−2.99
21.48

Ag-20
600/2/10
1.28
95.38
−0.5
8.66

Ag-20
635/2/10
1.29
93.27
−5.41
22.51

Ag-24
650/0.5/10
1.29
62.01
−3.99
25.51

Ag-24
645/0.5/10
1.22
53.04
−2.71
16.67

Ag-1
600/1/PHAC
1.30
94.18
−1.61
17.89

Ag-20
650/0.5/10
1.31
93.44
−5.26
21.04

Ag-24
575/2/10
1.21
94.46
−5.08
22.99

Ag-20
635/2/10
1.29
93.27
−5.41
22.51

Ag-19
575/3/10
1.33
94.25
−5.38
25.07

Ag-12
625/1/10
1.34
65.54
23.63
19.56

Ag-12
625/1/10
1.32
71.17
21.05
19.63

Ag-12
635/0.5/10
1.35
71.32
13.82
13.62

Ag-1
625/3/PHAC
1.32
65.21
24.02
22.49

Ag-12
635/0.5/10
1.35
64.18
18.22
17.04

Ag-12
635/0.3/10
1.35
79.6
9.04
7.31

Ag-13
635/0.3/10
1.34
38.54
15.27
11

Ag-12
635/0.5/10
1.34
80.09
10.51
7.99

Ag-12
630/0.7/10
1.37
72.96
14.97
10.44

Ag-12
630/0.7/10
0.57
87.75
6.18
4.56

Ag-13
650/0.5/10
1.36
4.61
15.13
5.16

Ag-22
625/0.5/10
1.29
74.16
17.2
20.72

Ag-21
(450/1/10) +
1.26
60.75
10.74
2.34

(635/0.6/10)

Ag-24
(450/1/10) +
1.26
81.63
5.11
0.83

(635/0.6/10)

Ag-21
625/1/10
1.33
21.04
16.09
2.81

Ag-24
625/1/10
1.35
69.03
7.33
0.15

Ag-20
635/0.6/10
1.28
89.93
6.67
9.6

Ag-21
635/0.6/10
1.28
51.58
13.43
4.69

Ag-24
635/0.6/10
1.27
78.17
7.73
2.76

Ag-21
600/3/10
1.27
24.57
12.39
7.72

Ag-19
635/1/10
1.28
84.58
3.58
3.24

Ag-21
635/1/10
1.26
40.14
10.14
−0.13

Ag-24
635/1/10
1.29
78.27
4.37
−0.11

Ag-20
640/0.5/10
1.27
89.29
7.12
9.32

Ag-21
640/0.5/10
1.28
39.19
13.64
0.14

Ag-22
640/0.5/10
1.26
67.68
20.56
21.8

Ag-13
650/0.5/10
0.55
50.65
20.25
15.66

As indicated in FIG. 48, the resultant colored glass articles may be grouped into regions of the a*-b* plot according to the hue of the colored glass article. That is, colored glass articles having similar color hues have combinations of discrete a* and b* values that fall within the same region of the a*-b* plot. In particular, colored glass articles that appear yellow have a*, b* values that fall within the region defined by the intersection of four lines: b*=0.2879·a*+27.818 (line A); b*=7.0833·a*−94.5 (line B); b*=0.45·a*+104.5 (line C); and b*=15.3·a*+253 (line D). The region defined by the intersection lines A, B, C, and D can be referred to as the “yellow region” and colored glass articles having combinations of discrete a* and b* values falling within this region will generally appear yellow.

Similarly, colored glass articles that appear orange have a*, b* values that fall within the region defined by the intersection of four lines: b*=7.0833·a*−94.5 (line B); b*=−0.9583·a*+146.75 (line E); b*=2.6957·a*−50.565 (line F); and b*=33 (line G). The region defined by the intersection lines B, E, F, and G can be referred to as the “orange region” and colored glass articles having combinations of discrete a* and b* values falling within this region will generally appear orange.

Still referring to FIG. 48, colored glass articles that appear red have a*, b* values that fall within the region defined by the intersection of four lines: b*=2.6957·a*−50.565 (line F); a*=54 (line H); b*=1.0769·a*−17.154 (line I); and b*=6.6667·a*−173.67 (line J). The region defined by the intersection lines F, H, I, and J can be referred to as the “red region” and colored glass articles having combinations of discrete a* and b* values falling within this region will generally appear red.

Colored glass articles that appear green have a*, b* values that fall within the region defined by the intersection of four lines: b*=0.2879·a*+27.818 (line A); a*=0 (line K); b*=−1.375·a*+1 (line L); and b*=9.333·a*+86.667 (line M), exclusive of a* greater than −0.3 and less than 0.3 and exclusive of b* greater than −0.5 and less than 0.5. The region defined by the intersection lines A, L, K, and M can be referred to as the “green region” and colored glass articles having combinations of discrete a* and b* values falling within this region will generally appear green.

Colored glass articles that appear pink/purple have a*, b* values that fall within the region defined by the intersection of four lines: b*=0.0833·a*+20.833 (line N); b*=2.1182·a*−32.073 (line O); b*=−0.3 (line P); and b*=1.5929·a*−0.3 (line Q), exclusive of a* greater than −0.3 and less than 0.3 and exclusive of b* greater than −0.5 and less than 0.5. The region defined by the intersection lines N, O, P, and Q can be referred to as the “pink/purple region” and colored glass articles having combinations of discrete a* and b* values falling within this region will generally appear pink/purple.

Referring now to Table 19, colored glass articles in the form of glass coupons were produced from the glass compositions of Tables 15 and 16. The glass coupons had thicknesses from ˜0.5 mm to ˜1.4 mm and were heat treated at various times and temperatures (as specified in Table 19) to produce colored glass articles with different color hues. PHCFR means that the glass coupon was placed directly into a pre-heated furnace, held for the indicated time, at which point the furnace was switched off and the glass coupon was cooled in the furnace at the cooling rate of the furnace (typically 2-3° C./minute). PHAC means that the glass coupon was placed directly into a pre-heated furnace, held for the indicated time, then removed and allowed to cool back to room temperature in ambient air. The CIELAB L*, a*, and b* coordinates of each colored glass article were determined. The average transmittance (%) for each sample over the wavelength range from 380 nm to 750 nm was also determined. The results are reported in Table 19.

TABLE 19

Heat Treatment

(Temp (° C.)/Time

Average Visible

(hours)/Ramp Rate
Thickness
Transmittance

Example
(° C./min))
(mm)
% (380-750 nm)
L*
a*
b*

Ag-10
575/2/10
1.28
86.1
95.61
−2.57
10.47

Ag-10
575/2/10
1.33
85.8
95.5
−2.51
10.73

Ag-12
575/2/10
1.30
83.4
95.46
−4.72
15.2

Ag-12
575/2/10
1.31
82.5
95.21
−4.78
16.2

Ag-10
600/1/10
1.29
82.6
94.06
−0.93
15.68

Ag-10
600/1/10
1.29
86.2
95.27
−1.08
9.58

Ag-11
600/1/10
1.32
44.0
71.5
21.65
110.29

Ag-11
600/1/10
1.33
43.1
70.48
23.07
110.67

Ag-12
600/2/10
1.34
62.0
82.02
14.23
39.93

Ag-12
600/2/10
1.31
62.3
82.6
12.96
41.47

Ag-10
600/3/10
1.33
64.4
88.3
−2.26
65.85

Ag-10
600/3/10
1.29
69.5
90.44
−3.88
51.15

Ag-11
600/3/10
1.32
24.6
43.41
41.48
73.52

Ag-11
600/3/10
1.34
30.5
53.38
36.16
89.47

Ag-12
600/3/10
1.32
49.3
71.89
26.88
63.17

Ag-12
600/3/10
1.33
50.0
72.44
26.28
61.16

Ag-11
575/2/10
1.29
51.8
80.43
5.3
94.46

Ag-11
575/2/10
1.32
52.6
81.29
3.96
93.62

Ag-12
600/1/10
1.36
76.5
89.88
5.59
16.84

Ag-12
600/1/10
1.30
76.2
90.36
4.53
20.01

Ag-10
600/2/10
1.31
77.1
92.72
−2.81
29.07

Ag-10
600/2/10
1.28
76.4
92.55
−3.22
30.79

Ag-11
600/2/10
1.30
36.2
61.58
30.81
101

Ag-11
600/2/10
1.32
35.4
60.37
32.13
100.26

Ag-10
625/1/10
1.33
74.6
90.4
3.5
27.63

Ag-10
625/1/10
1.34
70.9
88.67
5.26
33.93

Ag-11
625/1/10
1.33
34.4
56.78
40.08
95.88

Ag-11
625/1/10
1.35
35.2
58.43
38.04
98.02

Ag-12
625/1/10
1.34
45.9
65.54
23.63
19.56

Ag-12
625/1/10
1.32
52.4
71.17
21.05
19.63

Ag-10
635/0.5/10
1.32
76.2
89.49
7.4
15.81

Ag-12
635/0.5/10
1.35
50.0
71.32
13.82
13.62

Ag-10
625/2/10
1.32
59.4
83.97
7.32
53.78

Ag-10
625/2/10
1.32
53.9
79.43
12.07
62

Ag-11
625/2/10
1.31
16.8
21.62
46.36
36.66

Ag-11
625/2/10
1.30
19.2
28.68
48.69
48.74

Ag-12
625/2/10
1.31
24.2
40.92
34.87
38.77

Ag-12
625/2/10
1.31
26.3
40.9
42.34
45.72

Ag-16
as made
0.60
88.7
95.09
4.58
−1.73

Ag-16
575/0.33/10
0.57
86.5
94.76
3.32
1.91

Ag-16
565/0.25/10
0.60
88.1
95
4.26
−0.83

Ag-16
as made
1.34
86.3
93.7
8.44
−3.23

Ag-16
575/0.33/10
1.32
77.1
92.03
3.62
13.15

Ag-16
565/0.25/10
1.32
85.2
93.51
7.83
−1.61

Ag-16
as made
2.06
84.4
92.66
10.98
−4.12

Ag-16
575/0.33/10
2.03
77.6
91.28
7.96
6.77

Ag-16
565/0.25/10
2.04
82.1
92.25
9.9
−0.62

Ag-28
600/0.5/
1.26
63.2
89.41
−8.22
57.36

PHCFR

Ag-28
600/0.25/
1.31
72.2
93.01
−7.93
33.76

PHCFR

Ag-28
600/0.75/
1.35
54.9
83.95
−2.24
85.2

PHCFR

Ag-28
600/1/
1.32
50.1
79.51
4.83
96

PHCFR

Ag-28
600/1.25/
1.31
42.4
69.76
24.11
109.37

PHCFR

Ag-28
600/1.5/
1.31
31.2
46.01
53.51
77.81

PHCFR

Ag-1
600/1/PHAC
1.30
81.9
94.18
−1.61
17.89

Ag-9
600/1/PHAC
1.31
49.3
77.86
12.16
106.74

Ag-1
600/2/PHAC
1.31
61.0
81.94
14.76
45.2

Ag-9
600/2/PHAC
1.31
45.5
73.48
18.67
108.37

Ag-1
600/3/PHAC
1.32
41.6
60.97
36.89
57.26

Ag-9
600/3/PHAC
1.31
22.8
37.09
48.11
62.4

Ag-1
625/1/PHAC
1.27
68.7
84.18
6.08
9.04

Ag-9
625/1/PHAC
1.31
56.5
79.96
15.43
62.16

Ag-1
625/2/PHAC
1.33
26.8
43.55
32.19
26.91

Ag-9
625/2/PHAC
1.32
39.5
61.72
41.44
100.95

Ag-1
625/3/PHAC
1.32
45.8
65.21
24.02
22.49

Ag-9
625/3/PHAC
1.29
20.9
27.58
50.33
46.01

Ag-9
650/1/PHAC
1.32
37.5
57.39
33.25
43.5

Ag-1
650/1/PHAC
1.31
44.7
72.34
1.09
29.03

Ag-9
as made
1.30
92.2
96.88
−0.02
−0.01

Ag-1
as made
1.31
92.2
96.92
−0.01
0.09

Ag-1
575/1/PHAC
1.30
86.9
96.33
−2.88
7.92

Ag-9
575/1/PHAC
1.33
87.9
96.22
−1.88
6.36

Ag-1
600/0.5/10
1.32
80.0
92.34
2.78
16.14

Ag-9
600/0.5/10
1.33
52.2
72.32
25.62
43.19

Ag-1
600/1/10
1.29
50.2
78.31
13
104.03

Ag-9
600/1/10
1.31
70.1
86.43
9.77
25.5

Ag-1
600/2/10
1.33
33.9
54.05
46.56
90.95

Ag-9
600/2/10
1.31
25.0
40.56
48.66
68.35

Ag-1
600/3/10
1.32
39.4
57.71
37.75
53.96

Ag-9
600/3/10
1.32
31.1
49.88
47.94
84.03

Ag-12
635/0.5/10
1.35
41.5
64.18
18.22
17.04

Ag-13
635/0.5/10
0.59
41.4
65.97
−1.78
6.53

Ag-10
635/0.33/10
1.34
74.0
87.67
9.78
15.76

Ag-10
635/0.33/10
0.62
84.3
93.14
3.83
6.38

Ag-11
635/0.33/10
1.36
39.5
63.67
36.89
105.88

Ag-11
635/0.33/10
0.59
50.1
69.96
15.42
24.46

Ag-29
635/0.33/10
1.34
85.1
94.52
0.48
9.73

Ag-29
635/0.33/10
0.61
87.4
95.33
0.21
6.61

Ag-12
635/0.33/10
1.35
61.6
79.6
9.04
7.31

Ag-12
635/0.33/10
0.61
78.5
89.9
3.47
3.3

Ag-13
635/0.33/10
1.34
20.6
38.54
15.27
11

Ag-13
635/0.33/10
0.61
50.9
78.07
16.01
101.22

Ag-10
635/0.5/10
1.34
74.7
88.54
8.59
17.4

Ag-10
635/0.5/10
0.59
80.1
91.15
5.96
10.8

Ag-11
635/0.5/10
1.32
36.8
60
39.32
100.53

Ag-11
635/0.5/10
0.59
48.5
76.1
18.64
111.37

Ag-29
635/0.5/10
1.34
86.7
95.37
−0.8
8.8

Ag-29
635/0.5/10
0.61
87.2
95.46
−0.63
8.11

Ag-12
635/0.5/10
1.34
63.3
80.09
10.51
7.99

Ag-12
635/0.5/10
0.60
80.3
90.61
4.01
3.43

Ag-10
630/0.66/10
1.35
72.0
87.8
8.65
22.02

Ag-10
630/0.66/10
0.59
76.8
89.84
7.04
15.34

Ag-11
630/0.66/10
1.35
27.9
43.57
50.81
73.87

Ag-11
630/0.66/10
0.59
42.0
67.2
32.97
110.25

Ag-29
630/0.66/10
1.36
83.9
94.65
−1.36
13.6

Ag-29
630/0.66/10
0.57
89.2
96.13
−0.64
4.96

Ag-12
630/0.66/10
1.37
53.7
72.96
14.97
10.44

Ag-12
630/0.66/10
0.57
75.6
87.75
6.18
4.56

Ag-13
630/0.66/10
1.34
3.2
17.64
−0.13
9.52

Ag-13
630/0.66/10
0.57
18.2
48.85
1.57
10.55

Ag-10
650/0.5/10
1.35
65.2
85.98
3.06
28.27

Ag-10
650/0.5/10
0.57
77.8
93.1
−2.63
16.08

Ag-11
650/0.5/10
1.35
24.5
34.47
49.12
57.71

Ag-11
650/0.5/10
0.56
38.4
61.12
27.94
74.46

Ag-29
650/0.5/10
1.35
71.1
93.59
−10.87
39.72

Ag-29
650/0.5/10
0.58
80.9
95.83
−6.92
18.3

Ag-12
650/0.5/10
1.33
35.2
61.52
12.86
25.33

Ag-12
650/0.5/10
0.57
59.8
80.08
6.11
13.24

Ag-13
650/0.5/10
1.36
2.1
4.61
15.13
5.16

Ag-13
650/0.5/10
0.55
26.0
50.65
20.25
15.66

Ag-13
635/0.6/10
0.50
39.8
68.86
−5.21
8.63

Ag-13
635/0.6/10
0.50
38.1
69.02
−4.23
10.36

Ag-19
625/0.5/10
1.28
81.6
91.48
−0.24
1.94

Ag-20
625/0.5/10
1.28
89.1
95.5
1.16
2.16

Ag-21
625/0.5/10
1.28
18.7
40.92
11.24
24.65

Ag-22
625/0.5/10
1.29
55.2
74.16
17.2
20.72

Ag-23
625/0.5/10
1.28
58.9
86.72
−2.66
91.23

Ag-24
625/0.5/10
1.27
75.7
89.09
2.7
2.71

Ag-19
(450/1 + 635/
1.25
66.2
85.08
1.93
7.48

0.6)/10

Ag-20
(450/1 + 635/
1.23
80.2
90.59
5.45
5.91

0.6)/10

Ag-21
(450/1 + 635/
1.26
34.5
60.75
10.74
2.34

0.6)/10

Ag-22
(450/1 + 635/
1.26
29.2
48.41
27.84
24.6

0.6)/10

Ag-23
(450/1 + 635/
1.25
52.3
81.15
6.31
103.91

0.6)/10

Ag-24
(450/1 + 635/
1.26
64.8
81.63
5.11
0.83

0.6)/10

Ag-19
575/2/10
1.19
88.5
96.2
−1.67
5.92

Ag-20
575/2/10
1.18
88.8
96.23
−1.37
6.17

Ag-21
575/2/10
1.16
67.3
90.82
−7.55
56.94

Ag-22
575/2/10
1.20
73.4
91.99
−4.71
37.28

Ag-23
575/2/10
1.23
65.7
90.94
−9.74
52.14

Ag-24
575/2/10
1.21
80.3
94.46
−5.08
22.99

Ag-19
575/3/10
1.33
79.0
94.25
−5.38
25.07

Ag-20
575/3/10
1.36
87.2
95.79
−1.76
8.63

Ag-21
575/3/10
1.35
48.1
75.48
20.79
106.6

Ag-22
575/3/10
1.34
50.3
78.23
13.57
100.58

Ag-23
575/3/10
1.35
54.8
83.93
−2.13
87.35

Ag-24
575/3/10
1.34
69.8
89.53
1.16
40.46

Ag-19
600/1/10
1.31
87.2
94.83
1.61
4.63

Ag-20
600/1/10
1.32
88.3
95.72
−0.04
5.54

Ag-21
600/1/10
1.33
54.1
74.55
21.53
41.51

Ag-22
600/1/10
1.31
62.5
83.83
10.63
46.05

Ag-23
600/1/10
1.33
61.7
88.97
−7.73
76.89

Ag-24
600/1/10
1.31
81.0
91.25
4.02
7.41

Ag-19
625/0.75/10
1.35
67.6
83.95
3.26
8.39

Ag-20
625/0.75/10
1.37
83.2
93.23
2.8
9.89

Ag-21
625/0.75/10
1.37
7.7
14.26
16.11
14.63

Ag-22
625/0.75/10
1.37
54.0
73.76
18.6
26.67

Ag-23
625/0.75/10
1.37
49.0
77.37
13.14
107.83

Ag-24
625/0.75/10
1.36
76.2
89.09
3.18
2.61

Ag-19
625/1/10
1.34
71.6
86.86
3.84
2.74

Ag-20
625/1/10
1.34
81.7
91.97
4.78
9

Ag-21
625/1/10
1.33
6.9
21.04
16.09
2.81

Ag-22
625/1/10
1.35
37.4
57.25
32.53
43.57

Ag-23
625/1/10
1.35
17.4
32.52
37.79
42.15

Ag-24
625/1/10
1.35
46.9
69.03
7.33
0.15

Ag-19
625/2/10
1.36
56.7
77.84
3.78
3.15

Ag-20
625/2/10
1.37
61.3
83.21
9.05
39.01

Ag-21
625/2/10
1.36
1.7
6.03
5.89
6.3

Ag-22
625/2/10
1.35
24.2
39.71
34.72
46.35

Ag-23
625/2/10
1.37
1.0
0.84
1.4
−0.02

Ag-24
625/2/10
1.37
20.6
49.68
7.22
18.91

Ag-19
635/0.6/10
1.27
78.4
90.97
0.85
2.76

Ag-20
635/0.6/10
1.28
78.5
89.93
6.67
9.6

Ag-21
635/0.6/10
1.28
24.9
51.58
13.43
4.69

Ag-22
635/0.6/10
1.28
47.7
67.94
22.47
27.95

Ag-23
635/0.6/10
1.26
44.4
69.96
24.92
104.44

Ag-24
635/0.6/10
1.27
58.0
78.17
7.73
2.76

Ag-19
650/0.33/10
1.31
48.7
75.06
5.45
37.69

Ag-20
650/0.33/10
1.32
69.6
86.53
4.09
15.65

Ag-21
650/0.33/10
1.31
15.4
40.77
8.5
13.14

Ag-22
650/0.33/10
1.32
38.6
61.55
16.07
24.77

Ag-23
650/0.33/10
1.32
55.2
83.6
3.6
98.53

Ag-24
650/0.33/10
1.31
60.4
79.86
1.57
0.06

Ag-19
575/4/10
1.35
62.5
83.86
10.63
45.29

Ag-20
575/4/10
1.35
80.8
94.03
−2.99
21.48

Ag-21
575/4/10
1.36
31.9
46
51.36
75.97

Ag-22
575/4/10
1.37
40.8
66.13
32.1
107.91

Ag-23
575/4/10
1.37
38.5
61.84
37.63
102.88

Ag-24
575/4/10
1.35
53.1
73.2
19.64
35.14

Ag-19
600/2/10
1.27
65.2
81.77
8.74
17.89

Ag-20
600/2/10
1.28
86.8
95.38
−0.5
8.66

Ag-21
600/2/10
1.27
19.1
25.15
38.39
41.98

Ag-22
600/2/10
1.28
41.8
64.47
34.95
82.43

Ag-23
600/2/10
1.25
37.3
58.86
39.89
98.15

Ag-24
600/2/10
1.27
67.2
83.23
7.5
10.6

Ag-19
600/3/10
1.26
52.0
71.68
13.7
17.07

Ag-20
600/3/10
1.29
84.2
94.77
−1.5
14.51

Ag-21
600/3/10
1.27
9.3
24.57
12.39
7.72

Ag-22
600/3/10
1.24
39.5
62.11
37.06
96.27

Ag-23
600/3/10
1.23
21.5
35.28
29.5
16.99

Ag-24
600/3/10
1.27
61.5
79.25
9.59
9.6

Ag-19
615/0.5/10
1.33
86.3
94.4
1.3
5.3

Ag-20
615/0.5/10
1.31
88.3
95.29
1.21
3.5

Ag-21
615/0.5/10
1.35
40.0
63.83
21.26
79.15

Ag-22
615/0.5/10
1.34
65.7
82.74
12.56
22.42

Ag-23
615/0.5/10
1.33
64.2
90.72
−11.12
66.64

Ag-24
615/0.5/10
1.36
83.7
92.44
1.04
2.52

Ag-19
615/1/10
1.27
80.4
90.96
0.89
3.45

Ag-20
615/1/10
1.28
87.9
95.27
1.06
4.77

Ag-21
615/1/10
1.30
25.5
48.52
11.08
17.34

Ag-22
615/1/10
1.31
30.2
45.53
48.19
73.96

Ag-23
615/1/10
1.29
50.1
78.19
13.1
108.41

Ag-24
615/1/10
1.28
79.9
90.88
2.5
3.31

Ag-19
635/1/10
1.28
67.1
84.58
3.58
3.24

Ag-20
635/1/10
1.30
80.7
91.4
5.14
8.57

Ag-21
635/1/10
1.26
17.2
40.14
10.14
−0.13

Ag-22
635/1/10
1.27
35.1
54.92
30.14
34.44

Ag-23
635/1/10
1.27
15.8
29.58
37.33
46.53

Ag-24
635/1/10
1.29
59.5
78.27
4.37
−0.11

Ag-19
635/2/10
1.27
36.9
65.94
−0.53
17.41

Ag-20
635/2/10
1.29
76.6
93.27
−5.41
22.51

Ag-21
635/2/10
1.26
0.4
1.28
1.76
1.45

Ag-22
635/2/10
1.28
25.2
42.76
29.96
47.39

Ag-23
635/2/10
1.27
1.4
3.97
1.91
−0.02

Ag-24
635/2/10
1.30
44.3
71.69
3.05
12.22

Ag-19
640/0.5/10
1.30
49.2
72.62
5.98
9.06

Ag-20
640/0.5/10
1.27
77.5
89.29
7.12
9.32

Ag-21
640/0.5/10
1.28
14.4
39.19
13.64
0.14

Ag-22
640/0.5/10
1.26
47.6
67.68
20.56
21.8

Ag-23
640/0.5/10
1.25
47.4
73.27
21.82
101.59

Ag-24
640/0.5/10
1.28
71.6
86.14
4.05
0.38

Ag-19
650/0.5/10
1.31
59.2
81.01
3.36
10.21

Ag-20
650/0.5/10
1.31
76.7
93.44
−5.26
21.04

Ag-21
650/0.5/10
1.32
5.3
20.93
4.42
17.31

Ag-22
650/0.5/10
1.31
27.8
47.96
24.34
42.2

Ag-23
650/0.5/10
1.29
48.8
77.89
7.06
92.68

Ag-24
650/0.5/10
1.29
29.3
62.01
−3.99
25.51

Ag-24
645/0.5/10
1.22
22.6
53.04
−2.71
16.67

Tables 20A-20D show example glass compositions (in terms of mol %) containing transition metal oxides and/or rare earth oxides as colorant(s), including the total amount of transition metal oxides and/or rare earth oxides present (i.e., Sum “TM+RE”).

TABLE 20A

Example

(mol %)
TM-1
TM-2
TM-3
TM-4
TM-5
TM-6
TM-7
TM-8
TM-9
TM-10

SiO₂
61.74
60.04
61.06
61.24
61.2
60.38
59.54
61.59
61.62
61.34

Al₂O₃
15.04
15.86
15.39
15.39
15.42
15.51
15.98
15.28
15.09
15.32

B₂O₃
6.06
6.19
6.05
5.95
5.9
5.93
5.9
6.01
5.94
5.94

Li₂O
9.03
8.93
8.94
9.93
9.95
8.65
8.69
9.28
9.3
9.39

Na₂O
1.41
1.4
1.4
1.5
1.5
1.41
1.52
1.38
1.47
1.46

K₂O
0.2
0.2
0.2
0.2
0.2
0.2
0.19
0.2
0.2
0.2

CaO
5.25
6.12
3.84
1.32
2.53
3.83
1.88
4.16
4.19
4.25

MgO
0.99
1
2.88
4.24
3.08
2.88
5.05
1.89
1.9
1.93

NiO
0.0154
0.0178
0.0170
0.0161
0.0154
0.0000
0.0000
0.0163
0.0000
0.0234

Co₃O₄
0.0001
0.0001
0.0001
0.0000
0.0000
0.0000
0.0000
0.0000
0.0023
0.0094

Cr₂O₃
0.0297
0.0287
0.0272
0.0280
0.0266
0.0008
0.0008
0.0256
0.0000
0.0000

CuO
0.2207
0.1959
0.1906
0.1750
0.1758
0.0008
0.0000
0.1638
0.2810
0.1165

CeO₂
0.0000
0.0000
0.0000
0.0000
0.0000
0.2100
0.2100
0.0000
0.0000
0.0000

TiO₂
0.01
0.01
0.01
0.01
0.01
0.99
1.02
0.01
0.01
0.01

Sum
0.2759
0.2525
0.2449
0.2291
0.2278
1.2016
1.2308
0.2157
0.2933
0.1593

TM + RE

TABLE 20B

Example

(mol %)
TM-11
TM-12
TM-13
TM-14
TM-15
TM-16
TM-17
TM-18
TM-19
TM-20

SiO₂
61.06
61.24
61.14
61.48
61.47
61.13
61.11
61.32
61.1
61.18

Al₂O₃
15.39
15.39
15.41
15.58
14.54
14.65
15.75
15.29
14.87
14.65

B₂O₃
6.05
5.95
5.91
6.03
5.92
5.9
5.79
5.84
5.95
6.14

Li₂O
8.94
9.93
9.96
9.69
9.92
10
9.24
9.35
9.96
10.05

Na₂O
1.4
1.5
1.49
1.48
1.83
1.83
1.36
1.47
1.86
1.86

K₂O
0.2
0.2
0.2
0.2
0.19
0.19
0.17
0.2
0.2
0.19

CaO
3.84
1.32
3.74
1.31
1.99
2.03
4.31
4.23
2.06
2.02

MgO
2.88
4.24
1.92
4.22
1.92
1.94
2.01
1.99
1.98
1.94

NiO
0.0170
0.0161
0.0164
0.0000
0.0000
0.0000
0.0215
0.0000
0.0000
0.0000

Co₃O₄
0.0001
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0025
0.0000
0.0000

Cr₂O₃
0.0272
0.0280
0.0269
0.0000
0.0000
0.0000
0.0270
0.0000
0.0000
0.0000

CuO
0.1906
0.1750
0.1693
0.0000
0.0000
0.0000
0.1761
0.2642
0.0000
0.0000

CeO₂
0.0000
0.0000
0.0000
0.0000
0.2000
0.2100
0.0000
0.0000
0.4200
0.4100

TiO₂
0.01
0.01
0.01
0.01
0.99
0.99
0.01
0.05
1.01
1

Sum
0.2449
0.2291
0.2226
0.0100
1.1900
1.2000
0.2346
0.3167
1.4300
1.4100

TM + RE

TABLE 20C

Example
TM-21
TM-22
TM-23

SiO₂
61.42
61.39
61.04

Al₂O₃
14.92
14.87
14.73

B₂O₃
5.62
5.78
5.8

Li₂O
9.91
9.85
9.94

Na₂O
1.87
1.86
1.84

K₂O
0.2
0.2
0.19

CaO
2.06
2.06
2.03

MgO
1.99
1.97
1.95

NiO
0.0000
0.0000
0.0000

Co₃O₄
0.0000
0.0000
0.0000

Cr₂O₃
0.0000
0.0000
0.0000

CuO
0.0000
0.0000
0.0000

CeO₂
0.4200
0.4200
0.4200

TiO₂
1.02
1.02
1.01

Sum
1.4400
1.4400
1.4300

TM + RE

TABLE 20D

Example

(mol %)
TM-24
TM-25
TM-26
TM-27
TM-28
TM-29
TM-30
TM-31
TM-32
TM-33
TM-34

SiO₂
58.63
59.17
58.78
58.51
58.74
59.71
60.28
58.31
60.15
59.03
61.64

Al₂O₃
16.38
16.61
16.52
16.52
16.30
16.46
16.48
16.41
15.79
16.35
15.05

B₂O₃
6.05
5.71
5.95
6.06
6.09
5.95
6.08
5.94
6.14
5.85
5.87

Li₂O
9.95
11.13
10.91
10.50
10.05
10.45
10.24
9.70
8.95
11.86
12.03

Na₂O
4.28
5.76
5.23
4.77
4.27
4.78
4.29
4.24
1.41
6.32
3.93

K₂O
0.20
0.19
0.19
0.20
0.19
0.20
0.20
0.20
0.20
0.19
0.39

MgO
0.04
0.02
0.03
0.04
0.05
0.03
0.03
0.04
1.98
0.08
0.02

ZnO
3.96
0.99
2.00
3.01
3.92
1.99
2.00
3.96
5.01
0.00
0.75

SnO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.98
0.01
0.00
0.01

Fe₂O₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.01
0.01
0.00

NiO
0.00
0.01
0.01
0.01
0.01
0.01
0.01
0.00
0.02
0.01
0.01

Co₃O₄
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Cr₂O₃
0.00
0.03
0.03
0.03
0.03
0.03
0.03
0.00
0.03
0.03
0.02

CuO
0.33
0.22
0.19
0.21
0.20
0.23
0.22
0.00
0.20
0.17
0.17

Sum
0.34
0.27
0.24
0.26
0.25
0.27
0.26
0.00
0.25
0.21
0.20

TM + RE

Tables 21A-21C show the dielectric constant (calculated) and dielectric constant (as measured at 10 GHz) for select examples from Tables 20A-20D. When calculated, the dielectric constant was calculated according to the formula: Dk=3.802946+0.01747*B₂O₃(mol %)+0.058769*Al₂O₃(mol %)+0.080876*Li₂O (mol %)+0.148433*Na₂O (mol %)+0.153264*K₂O (mol %)+0.045179*MgO (mol %)+0.080113*CaO (mol %). Where measured, the dielectric constant was measured using a split post dielectric resonator (SPDR at a frequency of 10 GHz. Tables 21A-21C also show the CIELAB L*, a*, and b* coordinates for select examples from Tables 20A-2D at the indicated thickness.

TABLE 21A

Example
TM-1
TM-2
TM-3
TM-4
TM-5
TM-6
TM-7
TM-8
TM-9
TM-10

Dk
6.2283
6.3393
6.2123
6.1651
6.2121
6.1945
6.1815
6.2106
6.2161
6.2415

Relationship

(calculated)

Dk
6.13
6.23
6.18
6.15
6.19
6.29
6.21
6.22

(measured

at 10 GHz)

L*

90.61
92.48
88.24

a*

−8.02
−4.39
−1.61

b*

4.61
−3.85
−4.42

Thickness

1.32
1.38
1.36

(mm)

TABLE 21B

Example
TM-11
TM-12
TM-13
TM-14
TM-15
TM-16
TM-17
TM-18
TM-19
TM-20

Dk
6.2123
6.1651
6.2555
6.1535
6.1101
6.1268
6.2410
6.2374
6.1475
6.1387

Relationship

(calculated)

Dk

(measured at

10 GHz)

L*
90.14
90.81
90.81
96.81
96.68
96.63
89.23
92.76
96.11
96.11

a*
−8.48
−7.43
−7.6
−0.02
−0.4
−0.39
−7.87
−4.26
−1.36
−1.36

b*
4.91
4.98
4.79
0.2
1.28
1.47
3.88
−3.53
4.76
4.76

Thickness
1.38
1.34
1.34
1.32
1.34
1.34
1.32
1.37
1.34
1.34

(mm)

TABLE 21C

Example
TM-21
TM-22
TM-23
TM-24
TM-28
TM-31

Dk
6.1426
6.1352
6.1268

Relationship

(calculated)

Dk

6.42
6.52
6.67

(measured at

10 GHz)

L*
96.11
96.11
96.22

a*
−1.36
−1.36
−1.3

b*
4.76
4.76
4.44

Thickness
1.34
1.34
1.36

(mm)

Tables 22A and 22B show the ion exchange characteristic (CS, DOL, and CT) for select glass articles from Tables 20A-20D at different thicknesses and ion exchange conditions (temperature, time, and ion exchange bath compositions).

TABLE 22A

Thickness
Temp
Time
KNO₃
NaNO₃
LiNO₃
CS
DOL
CT

Example
(mm)
(° C.)
(hrs.)
(wt. %)
(wt. %)
(wt. %)
(MPa)
(μm)
(MPa)

TM-24
0.6
440
6.5
79.2
19.4
1.4
599
5.62
104.67

TM-25
0.6
430
4
79
19.4
1.6
633
6.02
129.51

TM-26
0.6
430
4
79
19.4
1.6
661
5.03
124.41

TM-27
0.6
430
4
79
19.4
1.6
700
3.83
119.67

TM-28
0.6
430
4
79
19.4
1.6
684
3.97
117.14

TM-28
0.6
430
8
79
19.4
1.6
615
4.79
131.67

TM-28
0.6
430
16
79
19.4
1.6
559
6.82
97.64

TM-28
0.6
440
6
79
19.4
1.6
600
5.29
109.95

TM-28
0.6
440
6
79.2
19.4
1.4
651
4.67
108.80

TM-28
0.6
440
7
79.2
19.4
1.4
600
5.40
110.20

TM-28
0.6
440
6.5
79.2
19.4
1.4
589
5.56
105.80

TM-29
0.6
430
4
79
19.4
1.6
643
5.56
142.52

TM-30
0.6
430
4
79
19.4
1.6
681
5.24
127.46

TM-31
0.6
440
6
79
19.4
1.6
657
4.51
116.22

TM-31
0.6
440
6
79.2
19.4
1.4
613
5.10
124.20

TM-31
0.6
440
7
79.2
19.4
1.4
633
5.00
120.90

TM-31
0.6
440
6.5
79.2
19.4
1.4
640
5.17
124.90

TM-32
0.6
450
4
90
10
0
902
3.52
110

TM-32
0.6
450
8
90
10
0
832
4.52
160

TM-32
0.6
450
12
90
10
0
758
5.62
191

TM-32
0.6
450
8
89
10
1
773
3.54
110

TM-32
0.6
450
12
89
10
1
673
4.65
138

TM-32
0.6
450
8
88.5
10
1.5
695
3.64
96

TM-32
0.6
450
12
88.5
10
1.5
639
4.17
109

TM-13
0.6
450
4
90
10
0
900
3.99
133

TM-13
0.6
450
8
90
10
0
786
5.61
187

TM-13
0.6
450
12
90
10
0
721
7.55
174

TM-13
0.6
450
8
89
10
1
721
4.89
139

TM-13
0.6
450
12
89
10
1
661
5.76
143

TM-13
0.6
450
8
88.5
10
1.5
704
4.39
114

TM-13
0.6
450
12
88.5
10
1.5
636
5.69
113

TABLE 22B

Thickness
Temp
Time
KNO₃
NaNO₃
LiNO₃
CS
DOL
CT

Example
(mm)
(° C.)
(hrs.)
(wt. %)
(wt. %)
(wt. %)
(MPa)
(μm)
(MPa)

TM-33
1.33
400
16
89
10
1
672
9.1
72

TM-33
1.33
400
24
89
10
1
627
11.2
78

TM-33
1.33
430
8
80
20
0
518
11.6
97

TM-33
0.6
380
8
79
18.7
2.3
641
4.1
100

TM-33
0.6
380
10
79
18.7
2.3
612
4.7
102

TM-33
0.6
380
12
79
18.7
2.3
599
5.2
100

TM-33
0.6
410
4
79
19.5
1.5
633
5.3
109

TM-33
0.6
410
5
79
19.5
1.5
612
5.9
108

TM-33
0.6
410
6
79
19.5
1.5
601
6.1
107

TM-33
0.6
400
5
79
19.8
1.2
695
5.0
112

TM-33
0.6
400
5
79
20.1
0.9
671
5.3
116

TM-33
0.6
400
5
79
19.4
1.6
645
5.0
107

TM-33
0.6
430
2.5
79
19.4
1.6
591
6.0
101

TM-33
0.6
430
3
79
19.4
1.6
569
6.1
98

TM-33
0.6
430
3.5
79
19.4
1.6
557
6.8
96

TM-33
0.6
430
2.5
75.6
24
0.4
609
6.41
126

TM-33
0.6
430
2.5
76
24
0
602
7.57
129

TM-33
0.55
400
3
79
19.8
1.2
749
3.69
108

TM-8
0.6
450
4
89.8
10
0.2
693
5.54
139

TM-8
0.6
450
4
89.8
10
0.2
637
7.54
134

TM-8
0.6
450
8
89.5
10
0.5
664
5.56
134

TM-8
0.6
450
8
88.5
11
0.5
661
5.59
138

TM-8
0.6
450
8
87.5
12
0.5
645
5.69
142

TM-8
0.6
450
8
86.5
13
0.5
636
5.74
145

TM-8
0.6
450
8
89.5
10
0.5
667
5.52
136

TM-8
0.55
450
6.75
87.3
12.5
0.2
668
5.64
140

TM-8
0.55
450
6.75
87.5
12.5
0
686
5.63
157

TM-8
0.6
440
8
88
11
1
667
4.32
121

TM-8
0.6
440
10
88
11
1
638
5.10
127

TM-8
0.6
440
12
88
11
1
614
5.64
129

Table 23 shows the fracture toughness (K_IC) for select examples from Tables 20A-20D and a comparative example of a non-colored glass article comprising 58.41 mol % SiO₂, 6.07 mol % B₂O₃, 17.84 mol % Al₂O₃, 1.73 mol % Na₂O, 0.20 mol % K₂O, 4.43 mol % MgO, 0.57 mol % CaO, 0.01 mol % SnO₂, and 10.71 mol % Li₂O. The fracture toughness was measured using the chevron notch short bar method and the dual cantilever beam method.

TABLE 23

K_ICCNSB
K_ICDCB

Example
(MPa · m^1/2)
(MPa · m¹²)

TM-33
0.774
0.816

TM-8
0.8
0.839

TM-34
0.794
0.813

Comparative
0.786
0.877

Example

FIG. 50 shows the results of an incremental face drop on sandpaper (i.e., a “drop test”) for two different sandpaper conditions (180 grit) and (80 grit) for select examples from Tables 20A-20D and a comparative example of a non-colored glass article comprising 58.41 mol % SiO₂, 6.07 mol % B₂O₃, 17.84 mol % Al₂O₃, 1.73 mol % Na₂O, 0.20 mol % K₂O, 4.43 mol % MgO, 0.57 mol % CaO, 0.01 mol % SnO₂, and 10.71 mol % Li₂O. Prior to performing the drop test, the TM-33 samples were ion exchanged in a molten salt batch comprising 89.3 wt % KNO₃, 10 wt. % NaNO₃, and 0.7 wt. % LiNO₃at 440° C. for 9 hours. The TM-8 samples were ion exchanged in a molten salt batch comprising 79 wt % KNO₃, 19.9 wt. % NaNO₃, and 1.6 wt. % LiNO₃at 400° C. for 5 hours. The comparative examples were ion exchanged in a molten salt batch comprising 90.3 wt % KNO₃, 9 wt. % NaNO₃, and 0.7 wt. % LiNO₃at 450° C. for 5 hours.

A typical drop test is schematically shown in FIG. 51. Each sample 1310 was affixed to a standard test vehicle 1320, which approximates the size, mass, and balance of a generic “smart” phone, and dropped from a drop height h onto a sheet of sandpaper 1330 having an abrasive surface 1335. The drop height h ranged from about 0.2 meter to 2.2 meters in incremental heights of 0.1 meter. Drop testing was carried out using a 180-grit silicon carbide sandpaper surface and an 80 grit silicon carbide sandpaper surface. The drop performance is reported in terms of the maximum drop height in cm before failure of the colored glass article.

Tables 24A and 24B show example glass compositions (in terms of mol %) containing transition metal oxides and/or rare earth oxides as colorant(s) Tables 24A and 24B also show the dielectric constant (Dk, as measured at 10 GHz) for the example compositions.

TABLE 24A

Example (mol %)
TM-35
TM-36
TM-37
TM-38
TM-39
TM-40
TM-41
TM-42
TM-43

SiO₂
58.5
59.5
59.6
59.2
59.1
61.1
61.5
59.1
59.3

Al₂O₃
16.4
16.4
16.3
16.4
16.5
15.6
15.2
16.4
16.5

B₂O₃
5.8
5.8
5.6
5.9
5.9
5.8
6.0
6.0
5.7

P₂O₅
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0

Li₂O
11.8
9.2
8.7
9.4
9.0
9.3
8.2
9.4
8.8

Na₂O
6.1
3.8
3.3
3.8
3.3
3.8
1.2
3.7
3.3

K₂O
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2

MgO
0.0
0.0
0.1
0.9
1.9
0.0
0.1
0.1
0.1

CaO
0.0
4.9
5.9
3.9
4.0
4.0
7.4
4.9
6.0

TiO₂
1.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0

Fe₂O₃
0.00
0.00
0.00
0.00
0.00
0.00
0.01
0.00
0.00

CeO₂
0.20
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

NiO
0.00
0.02
0.01
0.02
0.02
0.02
0.02
0.03
0.03

Co₃O₄
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.01
0.01

Cr₂O₃
0.00
0.03
0.03
0.03
0.03
0.03
0.03
0.00
0.00

CuO
0.00
0.16
0.16
0.16
0.16
0.16
0.16
0.12
0.13

Cl
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

Dk
6.7
6.44
6.44
6.43
6.39
6.37
6.23
6.47
6.46

(measured

at 10 GHz)

TABLE 24B

Example (mol %)
TM-44
TM-45
TM-46
TM-47
TM-48
TM-49
TM-50
TM-51
TM-52

SiO₂
59.7
58.9
61.1
61.8
62.5
62.5
62.5
62.1
60.2

Al₂O₃
16.3
16.7
15.5
15.2
14.8
14.7
14.8
15.2
15.9

B₂O₃
5.8
5.9
5.9
5.6
6.0
6.0
6.0
5.9
6.0

P₂O₅
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0

Li₂O
9.3
8.9
9.4
8.3
8.9
8.9
9.0
8.9
8.8

Na₂O
3.7
3.3
3.8
1.2
1.4
1.4
1.4
1.4
1.4

K₂O
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2

MgO
0.9
1.9
0.0
0.1
1.9
2.9
3.9
5.1
0.1

CaO
3.9
4.0
3.9
7.5
4.1
3.1
2.1
1.1
7.2

TiO₂
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0

Fe₂O₃
0.00
0.00
0.00
0.01
0.00
0.00
0.01
0.00
0.01

CeO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

NiO
0.03
0.03
0.03
0.03
0.02
0.02
0.02
0.02
0.02

Co₃O₄
0.01
0.01
0.01
0.01
0.00
0.00
0.00
0.00
0.00

Cr₂O₃
0.00
0.00
0.00
0.00
0.03
0.03
0.03
0.03
0.03

CuO
0.12
0.12
0.12
0.13
0.18
0.17
0.18
0.20
0.19

Cl
0.01
0.01
0.01
0.01
0.00
0.00
0.00
0.00
0.00

Dk (measured
6.44
6.38
6.34
6.18
6.44
6.44
6.43
6.39
6.37

at 10 GHz)

Tables 25A-25C show example glass compositions (in terms of mol %) containing gold (Au) as a colorant.

TABLE 25A

Ex. (mol %)
SPR-1
SPR-2
SPR-3
SPR-4
SPR-5
SPR-6
SPR-7
SPR-8
SPR-9

SiO₂
60.610
60.886
60.779
60.735
60.801
59.984
59.847
60.214
60.910

Al₂O₃
14.400
14.464
14.443
14.430
14.427
14.765
14.715
14.608
14.544

B₂O₃
5.896
5.974
5.969
5.829
5.899
6.133
6.082
6.027
5.850

P₂O₅
0.031
0.027
0.027
0.031
0.031
0.000
0.000
0.000
0.000

Li₂O
10.074
9.955
9.947
10.047
10.037
10.424
10.479
10.415
9.760

Na₂O
4.254
4.283
4.315
4.259
4.249
4.239
4.235
4.224
4.274

K₂O
0.189
0.188
0.190
0.188
0.454
0.197
0.199
0.195
0.204

MgO
2.872
2.881
2.891
2.874
2.890
2.959
2.975
2.917
3.006

CaO
0.034
0.034
0.033
0.034
0.031
0.016
0.017
0.016
0.014

ZnO
0.985
0.999
0.993
0.985
0.994
1.045
1.020
1.012
1.015

TiO₂
0.006
0.006
0.006
0.006
0.004
0.007
0.007
0.007
0.006

ZrO₂
0.501
0.223
0.300
0.448
0.027
0.000
0.000
0.000
0.000

SnO₂
0.071
0.016
0.035
0.054
0.105
0.053
0.052
0.052
0.050

Fe₂O₃
0.024
0.024
0.024
0.024
0.025
0.146
0.096
0.047
0.048

NiO
0.000
0.000
0.000
0.000
0.000
0.000
0.233
0.229
0.000

Co₃O₄
0.000
0.000
0.000
0.000
0.000
0.001
0.002
0.002
0.000

HfO₂
0.006
0.003
0.006
0.006
0.000
0.000
0.000
0.000
0.000

MnO₂
0.019
0.000
0.000
0.021
0.000
0.000
0.000
0.000
0.000

As₂O₃
0.002
0.001
0.001
0.002
0.001
0.000
0.000
0.000
0.001

Au
0.000000
0.004966
0.004973
0.000000
0.000000
0.001997
0.001770
0.001802
0.000677

SO₃
0.000
0.003
0.008
0.000
0.000
0.000
0.010
0.005
0.005

Cl
0.025
0.027
0.029
0.027
0.025
0.029
0.030
0.029
0.314

TABLE 25B

Ex. (mol %)
SPR-10
SPR-11
SPR-12
SPR-13
SPR-14
SPR-15
SPR-16
SPR-17
SPR-18

SiO₂
60.874
61.382
60.006
61.945
62.849
61.812
61.880
61.363
61.235

Al₂O₃
14.545
14.424
14.896
14.480
14.514
15.558
15.478
15.755
15.656

B₂O₃
5.794
5.826
5.882
5.946
5.984
5.879
5.985
5.914
5.887

P₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Li₂O
8.957
9.890
10.033
10.946
10.972
11.048
10.969
11.170
11.146

Na₂O
4.264
4.299
4.326
6.323
5.323
5.337
5.379
5.421
5.382

K₂O
0.200
0.193
0.194
0.191
0.196
0.193
0.196
0.194
0.194

MgO
2.941
2.862
3.102
0.016
0.011
0.018
0.016
0.018
0.014

CaO
0.014
0.015
0.016
0.007
0.007
0.006
0.008
0.006
0.006

ZnO
1.990
1.011
1.074
0.000
0.000
0.000
0.000
0.000
0.000

TiO₂
0.007
0.007
0.008
0.007
0.006
0.006
0.006
0.006
0.008

ZrO₂
0.000
0.000
0.316
0.001
0.000
0.001
0.001
0.001
0.320

SnO₂
0.051
0.057
0.052
0.109
0.110
0.108
0.056
0.055
0.054

Fe₂O₃
0.048
0.004
0.068
0.003
0.004
0.003
0.004
0.069
0.069

NiO
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Co₃O₄
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.003

MnO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

As₂O₃
0.001
0.001
0.001
0.000
0.001
0.001
0.001
0.000
0.001

Au
0.000488
0.000357
0.000000
0.001297
0.000261
0.001960
0.000000
0.000327
0.000655

SO₃
0.000
0.009
0.000
0.000
0.000
0.002
0.000
0.007
0.003

Cl
0.312
0.020
0.025
0.025
0.022
0.025
0.022
0.022
0.020

TABLE 25C

Ex. (mol %)
SPR-19
SPR-20
SPR-21
SPR-22

SiO₂
60.872
60.616
62.173
61.281

Al₂O₃
16.544
16.474
14.974
14.343

B₂O₃
5.853
5.964
5.722
5.820

P₂O₅
0.000
0.000
0.000
0.018

Li₂O
11.078
10.927
9.237
6.759

Na₂O
5.336
5.358
2.332
7.465

K₂O
0.193
0.195
0.182
0.589

MgO
0.019
0.016
2.433
2.027

CaO
0.007
0.008
1.555
0.542

ZnO
0.000
0.000
0.976
0.973

TiO₂
0.007
0.007
0.010
0.006

ZrO₂
0.001
0.309
0.302
0.000

SnO₂
0.055
0.054
0.042
0.104

Fe₂O₃
0.003
0.047
0.043
0.044

NiO
0.000
0.000
0.000
0.000

Co₃O₄
0.000
0.000
0.000
0.000

HfO₂
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.000
0.000

As₂O₃
0.000
0.001
0.000
0.000

Au
0.000987
0.000157
0.000563
0.002166

SO₃
0.006
0.002
0.006
0.005

Cl
0.024
0.022
0.011
0.020

Referring now to Table 26, colored glass articles in the form of glass coupons were produced from the glass compositions of Tables 25A-25C. The glass coupons had the indicated thicknesses and were heat treated at various times and temperatures (as indicated) to produce colored glass articles with different color hues. The CIELAB L*, a*, and b* coordinates of each colored glass article were determined. The average transmittance (%) for each sample over the wavelength range from 380 nm to 750 nm was also determined. The results are reported in Table 26.

TABLE 26

Average

transmittance

Thickness
Temp
Time

(380 nm−

Example
(mm)
(° C.)
(Hr.)
L*
a*
b*
750 nm)

SPR-1
1.32
620
10
80.8
15
10.88
62.083

SPR-2
1.31
632
0.25
69.7
1.33
−15.5
53.986

SPR-2
1.35
545
2
88
8.84
−1.45
77.737

SPR-2
1.36
553
1.5
88.9
7.79
−1.3
79.081

SPR-2
1.36
630
6
77.1
19.7
2.28
61.052

SPR-2
1.42
603
1.5
69.1
9.07
−12.3
54.353

SPR-2
1.39
632
0.5
69.7
6.74
−12.2
54.045

SPR-2
1.29
705
0.25
73.7
20
−5.76
60.047

SPR-2
1.35
655
1.5
75.2
20.5
−1.62
60.186

SPR-2
1.38
630
6
76.9
20.1
2.43
60.776

SPR-2
1.34
545
1
88.3
8.75
−1.28
78.270

SPR-2
1.36
553
2
89.2
7.76
−1.14
79.523

SPR-2
1.36
630
1.5
77.2
20
2.26
61.288

SPR-2
1.4
632
6
69.5
7.02
−12.4
54.092

SPR-2
1.43
603
0.5
69
9.22
−12.6
54.475

SPR-2
1.32
632
0.25
69.4
1.26
−15.9
53.842

SPR-2
1.29
705
0.25
73.9
20
−5.92
60.530

SPR-2
1.35
655
1.5
75.2
20.6
−1.95
60.438

SPR-2
1.37
630
6
77
20.2
2.07
61.092

SPR-2
1.29
560
0.25
91.9
4.36
−0.78
83.484

SPR-2
1.29
580
0.25
92
4.2
−0.87
83.677

SPR-2
1.22
600
0.25
76.4
8.13
−12.5
65.670

SPR-2
1.22
560
0.50
91.4
5
−0.94
82.705

SPR-2
1.21
580
0.50
75.5
11.5
−12.3
64.875

SPR-2
1.2
600
0.50
70.9
2.8
−15.7
57.149

SPR-2
1.26
560
0.75
87.3
9
−2.33
77.093

SPR-2
1.28
580
0.75
70.3
10.9
−14.8
58.437

SPR-2
1.3
600
0.75
70.3
4.83
−13.4
55.255

SPR-2
1.27
560
2
75.2
15.9
−4.84
61.011

SPR-2
1.47
620
0.25
66.7
−1.17
−19
51.231

SPR-2
1.45
630
0.25
66.6
−1.27
−18.7
50.691

SPR-2
1.45
640
0.25
66.3
−0.3
−18.2
50.110

SPR-2
1.48
650
0.25
66.3
1.82
−16.9
49.961

SPR-2
1.48
660
0.25
67.4
4.84
−14.3
51.179

SPR-2
1.49
670
0.25
67.9
6.81
−13
51.865

SPR-2
1.33
680
0.25
70.7
8.42
−11.5
55.644

SPR-2
1.3
690
0.25
72.3
13.3
−9.69
58.346

SPR-2
1.3
700
0.25
72.7
14.9
−8.33
58.842

SPR-2
1.32
710
0.25
74.9
18
−3.59
60.103

SPR-2
1.29
620
0.50
70.7
4.6
−12.7
55.193

SPR-2
1.31
640
0.50
70.7
10.4
−11.8
56.589

SPR-2
0.9
660
0.50
81.5
13.6
−2.27
68.459

SPR-2
0.87
680
0.50
83
14.2
0
69.595

SPR-2
0.86
700
0.50
83.3
13.9
0.36
69.916

SPR-2
0.81
620
0.75
79.8
5.56
−7.92
67.047

SPR-2
0.69
640
0.75
83.7
9.69
−3.81
72.165

SPR-2
0.72
660
0.75
85.4
11.4
−0.42
73.325

SPR-2
1.28
680
0.75
78.3
17.9
0.24
62.902

SPR-2
1.29
700
0.75
78.4
17.6
0.44
62.728

SPR-2
1.29
620
2.00
75.3
17.7
−3.72
60.833

SPR-2
1.42
580
2
89.9
5.08
−1.36
80.246

SPR-2
1.3
600
2
70.6
11.1
−12
56.982

SPR-2
1.34
640
2
76.3
20.2
0.48
60.676

SPR-2
1.35
660
2
76.6
19.3
0.15
60.827

SPR-2
1.18
680
2
79.4
17.7
1.36
64.066

SPR-2
1.35
550
1
85.4
11.2
−2.58
74.328

SPR-2
1.34
550
1.25
80
16.2
−4.65
67.893

SPR-2
1.27
540
1.25
92.1
4.47
−0.39
83.614

SPR-2
1.27
710
2.5
78.8
19.2
3.29
62.662

SPR-2
1.34
625
1.25
72.1
15.3
−8.48
58.196

SPR-2
1.39
540
1.5
87
9.82
−1.71
76.314

SPR-2
1.35
590
0.917
70.8
8.23
−10.7
55.681

SPR-2
1.34
555
1
92.7
4.09
−0.34
84.664

SPR-2
1.335
635
1
70
11.7
−12.7
56.278

SPR-2
1.365
595
1
70.9
9.62
−10.6
56.159

SPR-2
1.279
615
1
70.9
6.71
−12.2
55.936

SPR-2
1.331
580
0.5
68.7
3.09
−17.4
55.139

SPR-2
0.641
525
2
94.3
2.41
−0.16
87.417

SPR-2
2.077
525
2
89
7.39
−0.62
78.548

SPR-2
0.64
545
2
94.5
2.23
−0.11
87.779

SPR-2
2.06
545
2
89.7
6.76
−0.51
79.648

SPR-3
1.3
630
6
77.6
18.6
1.33
61.990

SPR-3
1.31
575
1
74
16.2
−7.99
61.103

SPR-3
1.29
632
0.5
72.7
7.67
−9.49
57.240

SPR-3
1.25
603
1.5
73.2
8.79
−9.7
58.809

SPR-3
1.26
655
1.5
77.1
18.5
−0.67
62.079

SPR-3
1.37
575
1
73.3
17.7
−8.38
60.550

SPR-3
1.33
635
1
72.5
13.9
−8.58
58.373

SPR-3
1.37
615
1
70.7
8.26
−11.1
55.575

SPR-3
1.34
595
1
72.6
9.35
−8.15
57.204

SPR-3
1.27
555
1
93.2
3.16
−0.23
85.431

SPR-3
1.367
575
1
73
17.5
−8.56
60.095

SPR-3
1.33
635
1
72.7
14.9
−7.76
58.572

SPR-3
1.336
595
1
72.6
9.13
−8.28
57.195

SPR-3
1.242
603
1.5
73.1
8.86
−9.73
58.626

SPR-3
1.293
632
0.5
72.7
7.74
−9.49
57.192

SPR-3
1.356
615
1
70.8
8.14
−11.1
55.630

SPR-3
0.565
632
0.5
85.6
4.05
−4.57
74.432

SPR-3
1.512
632
0.5
69.3
8.38
−10.7
53.145

SPR-4
1.33
580
0.25
91.1
4.08
−1.11
82.311

SPR-4
1.34
600
0.25
73.9
9.69
−11.7
61.448

SPR-4
1.32
560
0.50
91.9
3.7
−0.66
83.379

SPR-4
1.34
580
0.50
73.1
12.9
−10.7
60.597

SPR-4
1.23
600
0.50
73.6
3.67
−11.4
58.393

SPR-4
1.23
560
0.75
88.4
6.93
−1.86
78.551

SPR-4
1.24
580
0.75
74.3
9.95
−8.94
60.566

SPR-4
1.23
600
0.75
74.4
5.31
−8.99
58.880

SPR-4
1.3
560
2.00
77.7
13.3
−0.84
62.143

SPR-4
1.3
580
2.00
74.4
10.8
−6.76
59.556

SPR-4
1.32
600
2.00
74.7
13.4
−5.8
60.238

SPR-4
1.28
560
0.25
72.4
10.6
−9.29
57.846

SPR-4
1.28
620
2
78.8
17.2
1.61
63.224

SPR-4
1.32
640
2
78.8
17.6
4.07
62.054

SPR-4
1.32
660
2
78.7
17.7
3.8
62.119

SPR-4
1.2
680
2
80.6
16.3
4.42
64.227

SPR-4
1.342
660
6
76.9
18.6
1.38
60.789

SPR-4
1.389
600
1
72.8
9.91
−6.88
56.945

SPR-4
1.285
600
10
79.1
17.3
3.94
62.620

SPR-4
1.289
620
10
78.7
17.7
3.31
62.257

SPR-4
1.295
640
10
78.3
17.9
2.64
62.079

SPR-4
1.308
660
2
77.6
18.3
1.83
61.500

SPR-4
0.528
710
2.5
89.7
7.57
2.52
78.250

SPR-4
2.043
710
2.5
73.1
22.9
9.92
53.254

SPR-5
1.348
660
6
83.1
9.17
10.21
64.324

SPR-5
1.32
600
10
82.4
9.71
9.07
63.785

SPR-5
1.293
620
10
82.8
9.49
8.88
64.444

SPR-5
1.35
640
10
82.6
9.48
9.53
63.931

SPR-5
1.315
660
2
82.8
9.65
9.27
64.280

SPR-6
1.31
600
1
64.6
24.8
−4.62
48.155

SPR-7
1.36
600
1
64.1
23.1
23.31
44.240

SPR-8
1.27
600
1
69.2
13.3
34.5
45.285

SPR-9
1.33
600
1
87.3
10.2
−3.02
77.166

SPR-10
1.303
600
1
88.1
6.56
−4.17
78.834

SPR-11
1.302
625
2
81.4
15.7
6.6
65.169

SPR-12
1.307
600
2
84.2
12.7
1.32
69.833

SPR-13
1.306
625
2
89.3
5.14
9.97
74.122

SPR-14
1.291
575
2
87.4
9.35
8.2
72.514

SPR-14
1.321
625
2
87.6
7.22
10.51
71.412

SPR-14
0.502
625
2
92.7
3.39
4.56
82.163

SPR-14
1.304
625
2
85.3
9.75
11.19
67.746

SPR-14
2.015
625
2
82.9
10.7
15.3
62.880

SPR-14
0.612
625
2
92.1
3.93
12.8
78.141

SPR-14
2.063
625
2
85.8
8.06
34.2
62.357

SPR-15
1.298
625
2
83
11.4
2.59
68.255

SPR-16
1.327
625
2
86.7
9.76
2.6
73.863

SPR-16
0.6
625
2
90
6.98
1.73
79.393

SPR-16
1.97
625
2
79.4
13.9
1.64
63.678

SPR-16
0.62
625
2
90.3
6.77
1.82
79.780

SPR-16
2.039
625
2
80.4
15.3
3.72
64.446

SPR-16
0.623
625
2
91.5
6.22
7.06
79.380

SPR-16
2.089
625
2
81.6
17.2
20.79
60.538

SPR-17
1.325
625
2
88.9
6.92
4.75
75.258

SPR-18
1.318
625
2
87.3
9.09
3.44
73.391

SPR-19
1.308
625
2
78
5.04
−9.39
63.809

SPR-20
1.332
625
2
80.5
6.25
−8.92
68.187

SPR-20
0.632
625
2
87.7
2.61
−5.06
77.726

SPR-20
1.353
625
2
79
5.44
−9.99
65.901

SPR-20
0.632
625
2
69
8.35
−14.9
53.661

SPR-20
0.622
625
2
88.1
1.98
−5.62
78.812

SPR-20
2.058
625
2
68
6.29
−18
53.414

SPR-14
1.291
575
2
87.4
9.35
8.2
72.514

SPR-14
1.321
625
2
87.6
7.22
10.51
71.412

SPR-14
0.502
625
2
92.7
3.39
4.56
82.163

SPR-14
1.304
625
2
85.3
9.75
11.19
67.746

SPR-14
2.015
625
2
82.9
10.7
15.3
62.880

SPR-14
0.612
625
2
92.1
3.93
12.8
78.141

SPR-14
2.063
625
2
85.8
8.06
34.2
62.357

SPR-14
1.291
575
2
87.4
9.35
8.2
72.514

SPR-14
1.321
625
2
87.6
7.22
10.51
71.412

SPR-14
0.502
625
2
92.7
3.39
4.56
82.163

SPR-14
1.304
625
2
85.3
9.75
11.19
67.746

SPR-14
2.015
625
2
82.9
10.7
15.3
62.880

SPR-14
0.612
625
2
92.1
3.93
12.8
78.141

SPR-14
2.063
625
2
85.8
8.06
34.2
62.357

SPR-16
1.327
625
2
86.7
9.76
2.6
73.863

SPR-16
0.6
625
2
90
6.98
1.73
79.393

SPR-16
1.97
625
2
79.4
13.9
1.64
63.678

SPR-16
0.62
625
2
90.3
6.77
1.82
79.780

SPR-16
2.039
625
2
80.4
15.3
3.72
64.446

SPR-16
0.623
625
2
91.5
6.22
7.06
79.380

SPR-16
2.089
625
2
81.6
17.2
20.79
60.538

SPR-20
1.332
625
2
80.5
6.25
−8.92
68.187

SPR-20
0.632
625
2
87.7
2.61
−5.06
77.726

SPR-20
1.353
625
2
79
5.44
−9.99
65.901

SPR-20
0.632
625
2
69
8.35
−14.9
53.661

SPR-20
0.622
625
2
88.1
1.98
−5.62
78.812

SPR-20
2.058
625
2
68
6.29
−18
53.414

SPR-16
1.327
625
2
86.7
9.76
2.6
73.863

SPR-16
0.6
625
2
90
6.98
1.73
79.393

SPR-16
1.97
625
2
79.4
13.9
1.64
63.678

SPR-16
0.62
625
2
90.3
6.77
1.82
79.780

SPR-16
2.039
625
2
80.4
15.3
3.72
64.446

SPR-16
0.623
625
2
91.5
6.22
7.06
79.380

SPR-16
2.089
625
2
81.6
17.2
20.79
60.538

SPR-20
1.332
625
2
80.5
6.25
−8.92
68.187

SPR-20
0.632
625
2
87.7
2.61
−5.06
77.726

SPR-20
1.353
625
2
79
5.44
−9.99
65.901

SPR-20
0.632
625
2
69
8.35
−14.9
53.661

SPR-20
0.622
625
2
88.1
1.98
−5.62
78.812

SPR-20
2.058
625
2
68
6.29
−18
53.414

SPR-21
1.381
620
8
84.2
−3.45
−7.17
70.463

SPR-22
3.069
640
8
72.6
16.9
68.63
40.945

SPR-22
3.085
660
8
71.9
17.5
66.16
40.588

SPR-22
3.1
680
8
71
17.9
65.27
39.780

SPR-22
3.15
700
8
72.3
17.5
64.89
41.003

SPR-22
3.4
620
2
72
18.4
67.51
40.834

SPR-22
3.07
640
2
71
18.5
66.03
40.098

Tables 27A-27NN show example glass compositions (in terms of mol %) containing transition metal oxides and/or rare earth oxides as colorants.

TABLE 27A

Ex. (mol %)
ORA-1
ORA-2
ORA-3
ORA-4
ORA-5
ORA-6
ORA-6
ORA-7
ORA-8

SiO₂
60.93
61.53
58.99
57.22
57.78
58.75
58.75
59.03
58.53

Al₂O₃
16.20
15.91
16.99
18.71
17.54
16.67
16.67
16.52
16.50

B₂O₃
5.66
5.59
6.15
5.68
5.96
5.92
5.92
5.86
5.58

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
10.49
10.61
11.02
10.75
10.92
11.78
11.78
11.65
11.55

Na₂O
1.67
1.68
1.74
1.71
1.68
6.26
6.26
6.22
6.17

K₂O
0.30
0.30
0.30
0.29
0.29
0.48
0.48
0.48
0.47

MgO
3.78
3.65
3.98
4.67
4.31
0.02
0.02
0.02
0.02

CaO
0.52
0.50
0.55
0.61
0.57
0.01
0.01
0.01
0.01

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.01
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.005
0.005
0.005
0.006
0.005
0.004
0.004
0.004
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.127
0.042
0.153
0.243
0.206
0.000
0.000
0.177
0.000

Co₃O₄
0.055
0.068
0.025
0.049
0.001
0.000
0.000
0.001
0.001

Cr₂O₃
0.000
0.000
0.000
0.000
0.000
0.098
0.098
0.000
0.000

CuO
0.247
0.104
0.088
0.034
0.724
0.000
0.000
0.000
1.151

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

As₂O₃
0.001
0.000
0.001
0.001
0.001
0.001
0.001
0.001
0.001

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.002
0.002
0.000
0.000
0.002
0.000

Cl
0.007
0.007
0.009
0.007
0.007
0.011
0.011
0.011
0.011

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27B

Ex. (mol %)
ORA-9
ORA-10
ORA-11
ORA-11
ORA-12
ORA-14
ORA-15
ORA-16

SiO₂
58.95
60.10
57.65
57.65
56.77
58.04
59.63
57.80

Al₂O₃
16.55
15.85
16.16
16.16
16.65
17.65
16.71
17.65

B₂O₃
5.97
5.74
5.95
5.95
5.90
6.20
6.16
5.87

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
11.70
9.81
11.61
11.61
9.84
11.04
10.94
10.85

Na₂O
6.22
4.23
6.10
6.10
4.24
1.68
1.67
1.69

K₂O
0.48
0.47
0.47
0.47
0.48
0.29
0.29
0.29

MgO
0.02
2.69
0.02
0.02
2.98
4.34
3.95
4.35

CaO
0.01
0.02
0.01
0.01
0.02
0.57
0.54
0.58

ZnO
0.02
0.96
0.00
0.00
1.04
0.00
0.00
0.00

TiO₂
0.01
0.01
1.91
1.91
1.95
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.005
0.004
0.004
0.004
0.006
0.005
0.005

CeO₂
0.000
0.000
0.100
0.100
0.102
0.000
0.000
0.000

NiO
0.000
0.000
0.000
0.000
0.000
0.000
0.058
0.048

Co₃O₄
0.046
0.001
0.001
0.001
0.001
0.001
0.011
0.013

Cr₂O₃
0.000
0.098
0.000
0.000
0.000
0.000
0.000
0.000

CuO
0.000
0.010
0.000
0.000
0.000
0.155
0.020
0.845

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

As₂O₃
0.001
0.001
0.001
0.001
0.000
0.001
0.001
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.015
0.009
0.002
0.000

Cl
0.011
0.007
0.011
0.011
0.011
0.007
0.007
0.007

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27C

Ex. (mol %)
ORA-17
ORA-18
ORA-21
ORA-22
ORA-23
ORA-24
ORA-25

SiO₂
56.37
58.62
58.27
58.49
58.94
58.49
57.45

Al₂O₃
18.99
17.25
16.34
16.49
16.40
16.55
18.22

B₂O₃
6.02
5.97
5.92
6.01
5.98
6.04
5.91

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
11.02
10.73
9.89
9.97
9.93
9.93
10.77

Na₂O
1.69
1.68
4.25
4.26
4.26
4.30
1.69

K₂O
0.28
0.29
0.48
0.48
0.49
0.49
0.29

MgO
4.81
4.17
2.91
2.95
2.90
2.93
4.45

CaO
0.61
0.59
0.01
0.01
0.01
0.02
0.60

ZnO
0.00
0.00
1.00
1.01
1.00
1.05
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.006
0.005
0.004
0.005
0.005
0.005
0.006

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.141
0.108
0.000
0.023
0.012
0.089
0.053

Co₃O₄
0.029
0.001
0.001
0.002
0.002
0.048
0.013

Cr₂O₃
0.000
0.000
0.068
0.038
0.002
0.008
0.000

CuO
0.006
0.576
0.829
0.233
0.037
0.044
0.525

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000

As₂O₃
0.001
0.001
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.001
0.006
0.003
0.000
0.000

Cl
0.007
0.009
0.011
0.011
0.011
0.009
0.005

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27D

Ex. (mol %)
ORA-26
ORA-27
ORA-28
ORA-29
ORA-30
ORA-31
ORA-32
ORA-33
ORA-34

SiO₂
57.72
57.57
57.20
56.72
56.18
59.18
58.40
58.81
58.08

Al₂O₃
17.62
17.48
17.51
17.36
17.14
16.63
16.20
16.54
16.54

B₂O₃
6.01
5.97
5.91
5.90
5.81
5.62
5.70
5.76
6.07

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
10.85
10.80
10.79
10.68
10.55
11.79
11.60
11.86
11.87

Na₂O
1.67
1.67
1.67
1.68
1.65
6.18
6.09
6.17
6.20

K₂O
0.29
0.29
0.29
0.28
0.28
0.46
0.47
0.47
0.48

MgO
4.25
4.22
4.23
4.19
4.15
0.02
0.02
0.02
0.02

CaO
0.58
0.58
0.58
0.58
0.56
0.01
0.01
0.01
0.01

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.00
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.006
0.006
0.006
0.006
0.006
0.004
0.003
0.004
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.057
0.057
0.053
0.052
0.052
0.077
0.039
0.127
0.071

Co₃O₄
0.012
0.012
0.012
0.011
0.012
0.001
0.001
0.032
0.002

Cr₂O₃
0.000
0.000
0.000
0.000
0.000
0.009
0.101
0.000
0.051

CuO
0.905
1.330
1.735
2.536
3.586
0.002
1.350
0.176
0.563

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.000
0.000
0.000
0.005
0.004
0.006
0.004

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.005
0.004
0.006
0.000
0.000
0.001
0.011
0.000
0.000

Cl
0.005
0.005
0.004
0.005
0.004
0.009
0.009
0.013
0.015

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27E

Ex. (mol %)
ORA-35
ORA-36
ORA-37
ORA-38
ORA-39
ORA-40
ORA-41
ORA-42
ORA-43

SiO₂
59.17
58.32
58.74
57.99
57.84
58.16
58.35
58.45
58.41

Al₂O₃
16.57
16.10
16.54
16.56
17.76
17.85
16.48
16.52
16.48

B₂O₃
5.67
5.69
5.75
6.03
6.08
6.00
6.00
6.09
6.04

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
11.86
11.64
11.91
11.97
11.03
10.89
10.06
10.12
10.07

Na₂O
6.16
6.07
6.13
6.22
1.69
1.69
4.28
4.26
4.25

K₂O
0.45
0.46
0.46
0.48
0.29
0.29
0.48
0.49
0.48

MgO
0.02
0.02
0.02
0.02
4.35
4.37
2.94
2.94
2.93

CaO
0.01
0.01
0.01
0.01
0.58
0.58
0.02
0.01
0.02

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
1.01
1.01
1.01

TiO₂
0.01
0.00
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.003
0.004
0.004
0.005
0.005
0.004
0.004
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.000
0.000
0.242
0.093
0.252
0.051
0.021
0.000
0.082

Co₃O₄
0.002
0.038
0.068
0.072
0.053
0.001
0.002
0.002
0.048

Cr₂O₃
0.002
0.051
0.000
0.012
0.001
0.001
0.036
0.001
0.006

CuO
0.086
1.582
0.092
0.515
0.022
0.066
0.278
0.091
0.137

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.006
0.005
0.004
0.007
0.006
0.005
0.004
0.005
0.004

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.003
0.000
0.010
0.012
0.002
0.005
0.014

Cl
0.009
0.007
0.013
0.015
0.009
0.009
0.013
0.013
0.013

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27F

Ex. (mol %)
ORA-44
ORA-45
ORA-46
ORA-47
ORA-48
ORA-49
ORA-50
ORA-51
ORA-52

SiO₂
58.30
58.71
58.54
58.67
58.47
58.47
58.61
58.63
57.36

Al₂O₃
16.45
16.46
16.41
16.53
16.48
16.43
16.48
16.55
17.09

B₂O₃
6.08
5.98
5.96
5.99
6.05
6.03
6.04
6.10
6.18

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
10.10
10.05
10.53
10.51
10.50
10.52
10.53
9.94
10.16

Na₂O
4.26
4.24
4.71
4.75
4.76
4.74
4.76
4.29
4.32

K₂O
0.48
0.48
0.48
0.49
0.49
0.48
0.49
0.29
0.49

MgO
2.91
2.93
0.96
0.97
0.97
0.98
0.97
2.93
3.12

CaO
0.02
0.02
0.98
0.98
0.99
0.99
0.99
0.02
0.02

ZnO
1.00
1.01
0.99
1.02
1.01
1.01
1.01
1.02
1.08

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.004
0.005
0.005
0.005
0.005
0.005
0.004
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.250
0.053
0.019
0.000
0.085
0.250
0.053
0.086
0.025

Co₃O₄
0.053
0.001
0.002
0.002
0.048
0.053
0.001
0.049
0.010

Cr₂O₃
0.001
0.000
0.039
0.001
0.005
0.000
0.000
0.005
0.001

CuO
0.058
0.036
0.339
0.054
0.111
0.010
0.036
0.060
0.103

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.006
0.005
0.005
0.004
0.006
0.005
0.004
0.003
0.000

As₂O₃
0.000
0.001
0.001
0.001
0.001
0.001
0.001
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.001
0.002
0.006
0.002
0.007
0.000
0.009
0.000
0.005

Cl
0.013
0.011
0.011
0.015
0.013
0.013
0.013
0.013
0.013

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27G

Ex. (mol %)
ORA-53
ORA-54
ORA-56
ORA-57
ORA-58
ORA-59
ORA-60
ORA-61
ORA-62

SiO₂
57.87
58.57
58.46
58.81
57.89
59.54
59.30
54.94
61.12

Al₂O₃
17.10
16.44
16.41
16.50
16.88
16.00
16.52
18.22
15.01

B₂O₃
5.76
5.80
5.84
5.78
5.98
6.02
5.63
6.53
5.46

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
9.89
9.90
9.84
9.82
10.00
10.04
9.71
10.84
9.12

Na₂O
4.33
4.22
4.21
4.22
4.30
4.23
4.27
4.68
3.84

K₂O
0.49
0.47
0.47
0.47
0.49
0.29
0.29
0.31
0.26

MgO
3.08
2.90
2.91
2.93
3.05
2.75
2.86
3.21
2.66

CaO
0.02
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZnO
1.06
0.99
0.99
1.03
1.06
0.95
1.00
1.10
0.90

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.004
0.004
0.004
0.004
0.004
0.004
0.004
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.084
0.048
0.049
0.037
0.097
0.023
0.090
0.049
0.050

Co₃O₄
0.048
0.002
0.035
0.016
0.053
0.010
0.046
0.002
0.032

Cr₂O₃
0.001
0.001
0.001
0.001
0.001
0.000
0.000
0.000
0.000

CuO
0.241
0.633
0.735
0.336
0.172
0.114
0.245
0.084
1.500

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.003
0.007
0.000
0.002
0.005
0.000
0.002

Cl
0.013
0.007
0.009
0.013
0.013
0.011
0.011
0.011
0.011

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27H

Ex. (mol %)
ORA-63
ORA-64
ORA-65
ORA-66
ORA-67
ORA-68
ORA-69
ORA-70
ORA-71

SiO₂
56.53
55.78
58.58
58.56
57.21
57.93
58.24
57.46
58.16

Al₂O₃
17.59
17.97
16.59
16.88
16.96
17.01
16.43
16.92
16.96

B₂O₃
6.17
6.34
5.92
5.97
6.16
5.96
6.05
6.19
5.86

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
10.10
10.32
9.82
9.88
9.97
9.92
9.84
10.02
9.82

Na₂O
4.35
4.34
4.27
4.29
4.30
4.31
4.24
4.32
4.35

K₂O
0.29
0.29
0.48
0.29
0.29
0.29
0.29
0.29
0.30

MgO
3.25
3.42
2.94
2.98
3.04
3.03
2.93
3.02
3.02

CaO
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02

ZnO
1.07
1.11
1.02
1.03
1.05
1.06
1.02
1.04
1.05

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.005
0.005
0.004
0.005
0.004
0.004
0.004
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.037
0.112
0.034
0.063
0.476
0.000
0.063
0.057
0.232

Co₃O₄
0.017
0.057
0.002
0.002
0.018
0.005
0.033
0.039
0.057

Cr₂O₃
0.000
0.000
0.030
0.000
0.000
0.000
0.000
0.000
0.000

CuO
0.548
0.232
0.260
0.008
0.487
0.444
0.824
0.595
0.145

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.003
0.001
0.000
0.002
0.001
0.003
0.002

As₂O₃
0.000
0.000
0.001
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.006
0.000
0.012
0.000
0.006
0.000
0.000
0.000
0.005

Cl
0.013
0.013
0.011
0.011
0.011
0.009
0.009
0.011
0.013

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 271

Ex. (mol %)
ORA-72
ORA-73
ORA-74
ORA-75
ORA-76
ORA-77
ORA-78
ORA-79
ORA-80

SiO₂
57.12
59.37
58.01
55.88
59.19
55.91
57.08
59.16
59.23

Al₂O₃
17.20
16.56
16.75
17.76
16.28
17.42
17.50
16.52
16.54

B₂O₃
6.36
5.79
6.24
6.48
5.92
5.76
6.14
5.82
5.86

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
10.08
9.75
10.06
10.29
9.77
9.68
9.98
11.85
11.83

Na₂O
4.35
4.27
4.31
4.36
4.24
4.26
4.37
6.18
6.21

K₂O
0.29
0.29
0.29
0.29
0.29
0.29
0.29
0.19
0.20

MgO
3.11
2.90
2.90
3.39
2.79
3.37
3.20
0.02
0.02

CaO
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.01
0.01

ZnO
1.06
1.02
1.02
1.17
1.00
1.25
1.13
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.49
2.04
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.005
0.004
0.004
0.005
0.004
0.005
0.004
0.004
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.106
0.015
0.291
0.200
0.000
0.000
0.000
0.083
0.000

Co₃O₄
0.047
0.001
0.057
0.050
0.001
0.001
0.054
0.048
0.001

Cr₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.005
0.000

CuO
0.238
0.000
0.013
0.077
0.000
0.000
0.215
0.093
0.061

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.002
0.000
0.004
0.002
0.000
0.001
0.001
0.003
0.005

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.000
0.000
0.003
0.000
0.005

Cl
0.011
0.009
0.013
0.011
0.009
0.009
0.011
0.011
0.015

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27J

Ex. (mol %)
ORA-81
ORA-82
ORA-83
ORA-84
ORA-85
ORA-86
ORA-87
ORA-88
ORA-89

SiO₂
59.07
59.29
59.35
59.18
59.52
59.10
58.23
58.92
58.45

Al₂O₃
16.48
16.51
16.56
16.41
16.38
16.53
16.16
16.40
16.34

B₂O₃
5.81
5.83
5.82
6.00
5.84
5.96
5.74
6.02
6.02

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
11.88
11.80
11.84
11.95
11.82
11.88
11.68
11.83
11.82

Na₂O
6.19
6.18
6.19
6.18
6.17
6.19
6.05
6.20
6.19

K₂O
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19

MgO
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02

CaO
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
1.91
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.004
0.004
0.036
0.025
0.003
0.004
0.004
0.058

CeO₂
0.000
0.000
0.001
0.001
0.003
0.099
0.002
0.000
0.000

NiO
0.249
0.026
0.000
0.000
0.000
0.000
0.000
0.000
0.057

Co₃O₄
0.053
0.010
0.001
0.001
0.001
0.001
0.001
0.015
0.035

Cr₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

CuO
0.009
0.106
0.000
0.000
0.000
0.000
0.000
0.370
0.791

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.004
0.005
0.001
0.000
0.001
0.000
0.001
0.001
0.004

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.001
0.001

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Cl
0.011
0.011
0.007
0.009
0.007
0.011
0.007
0.011
0.013

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27K

Ex. (mol %)
ORA-90
ORA-91
ORA-92
ORA-93
ORA-94
ORA-95
ORA-96
ORA-97
ORA-98

SiO₂
58.93
58.59
58.63
58.78
58.92
58.98
58.92
59.17
58.67

Al₂O₃
16.35
16.35
16.56
16.41
16.34
16.42
16.52
16.45
16.52

B₂O₃
5.98
6.07
6.13
6.10
5.99
6.04
6.01
5.97
5.92

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
11.84
11.80
11.87
11.82
11.77
11.87
11.87
11.88
11.85

Na₂O
6.20
6.21
6.24
6.21
6.18
6.22
6.24
6.21
6.24

K₂O
0.20
0.20
0.20
0.20
0.19
0.20
0.19
0.19
0.19

MgO
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.01

CaO
0.00
0.01
0.00
0.01
0.00
0.00
0.00
0.00
0.02

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.04

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.003
0.003
0.003
0.003
0.003
0.003
0.003
0.003
0.005

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.000
0.061
0.006
0.013
0.014
0.011
0.014
0.018
0.000

Co₃O₄
0.031
0.034
0.035
0.035
0.034
0.002
0.001
0.000
0.000

Cr₂O₃
0.016
0.000
0.048
0.029
0.015
0.055
0.037
0.047
0.000

CuO
0.411
0.628
0.229
0.364
0.504
0.147
0.142
0.015
0.000

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.007
0.004
0.004
0.004
0.003
0.004
0.004
0.005
0.000

As₂O₃
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.001
0.000
0.000
0.000
0.005
0.002
0.000
0.006
0.000

Cl
0.011
0.013
0.013
0.015
0.011
0.013
0.013
0.013
0.015

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.517

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27L

Ex. (mol %)
ORA-99
ORA-100
ORA-101
ORA-102
ORA-103
ORA-104
ORA-105
ORA-106
ORA-107

SiO₂
58.51
57.81
58.00
57.88
57.74
57.52
57.60
57.57
58.73

Al₂O₃
16.39
16.21
16.25
16.11
16.08
16.33
16.37
16.07
16.47

B₂O₃
5.84
5.81
5.60
5.69
5.76
5.83
5.74
5.99
6.09

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
11.76
11.72
11.62
11.74
11.79
11.78
11.76
10.97
11.98

Na₂O
6.21
6.11
6.08
6.05
6.04
5.19
4.27
4.23
6.24

K₂O
0.19
0.19
0.18
0.19
0.18
0.19
0.19
0.19
0.19

MgO
0.00
0.00
0.00
0.00
0.00
0.00
0.93
1.85
0.02

CaO
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.01

ZnO
0.01
0.00
0.00
0.00
0.00
1.01
1.03
1.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.006
0.009
0.009
0.009
0.009
0.009
0.009
0.009
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.000
0.000
0.112
0.214
0.306
0.000
0.000
0.000
0.015

Co₃O₄
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.003

Cr₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.028

CuO
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.200

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.001

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.003
0.000
0.005
0.008
0.000
0.000
0.001
0.000

Cl
0.017
0.018
0.014
0.016
0.014
0.016
0.016
0.016
0.013

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
1.042
2.094
2.105
2.077
2.055
2.101
2.069
2.087
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27M

Ex. (mol %)
ORA-108
ORA-109
ORA-110
ORA-111
ORA-112
ORA-113
ORA-114
ORA-115
ORA-116

SiO₂
59.04
58.88
59.31
59.45
60.14
60.08
60.58
59.80
59.18

Al₂O₃
16.49
16.45
16.59
16.60
16.68
16.98
16.85
17.22
15.95

B₂O₃
5.75
5.91
6.10
5.88
6.10
6.18
6.08
6.24
5.89

P₂O₅
0.03
0.02
0.02
0.02
0.02
0.02
0.04
0.00
0.00

Li₂O
11.98
12.01
12.09
12.08
12.25
12.27
12.27
12.29
12.01

Na₂O
6.18
5.68
5.27
4.78
4.34
3.87
3.86
3.89
6.27

K₂O
0.18
0.19
0.19
0.19
0.19
0.19
0.20
0.19
0.20

MgO
0.02
0.02
0.02
0.02
0.03
0.02
0.02
0.02
0.02

CaO
0.03
0.02
0.02
0.02
0.02
0.02
0.03
0.01
0.01

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.00
0.01
0.00
0.01
0.00
0.01
0.00
0.01
0.01

ZrO₂
0.00
0.51
0.00
0.51
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.027
0.016
0.016
0.016
0.016
0.016
0.028
0.004
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.018
0.017
0.019
0.014
0.016
0.017
0.000
0.018
0.001

Co₃O₄
0.003
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Cr₂O₃
0.028
0.029
0.030
0.031
0.029
0.030
0.000
0.030
0.001

CuO
0.181
0.219
0.294
0.343
0.160
0.284
0.000
0.271
0.002

HfO₂
0.000
0.006
0.000
0.006
0.000
0.000
0.000
0.000
0.000

MnO₂
0.024
0.015
0.012
0.012
0.016
0.013
0.022
0.001
0.001

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.001

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.001
0.004
0.000
0.000
0.000
0.004
0.000
0.002

Cl
0.011
0.013
0.011
0.011
0.009
0.009
0.009
0.007
0.009

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.451

TABLE 27N

Ex. (mol %)
ORA-117
ORA-118
ORA-119
ORA-120
ORA-121
ORA-122
ORA-123
ORA-124
ORA-125

SiO₂
58.83
59.12
58.95
58.94
59.09
58.96
59.27
58.89
59.84

Al₂O₃
14.57
15.93
15.90
15.16
15.91
17.23
17.31
17.36
17.03

B₂O₃
5.97
5.83
6.03
5.96
5.95
6.10
6.00
6.03
6.00

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
12.20
12.10
12.16
12.16
12.02
10.39
10.34
11.33
11.12

Na₂O
6.31
6.23
6.22
6.28
6.27
2.80
2.79
2.82
2.81

K₂O
0.20
0.19
0.20
0.20
0.20
0.10
0.10
0.10
0.10

MgO
0.02
0.02
0.02
0.02
0.02
0.99
0.99
1.00
0.98

CaO
0.01
0.01
0.01
0.01
0.01
2.03
2.04
1.02
0.99

ZnO
0.00
0.00
0.00
0.00
0.00
1.04
1.06
1.06
1.02

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.004
0.004
0.004
0.004
0.005
0.005
0.004
0.005

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.010
0.086
0.040
0.053
0.003
0.000
0.000
0.000
0.000

Co₃O₄
0.000
0.009
0.002
0.000
0.012
0.037
0.048
0.038
0.047

Cr₂O₃
0.003
0.001
0.001
0.002
0.001
0.049
0.000
0.052
0.000

CuO
0.015
0.002
0.001
0.009
0.025
0.253
0.024
0.271
0.037

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.002
0.000
0.002
0.004
0.005
0.007
0.004

As₂O₃
0.002
0.001
0.001
0.001
0.001
0.001
0.001
0.001
0.001

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.007
0.000
0.000
0.011
0.000
0.000
0.000
0.004

Cl
0.016
0.009
0.013
0.014
0.013
0.011
0.009
0.011
0.009

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
1.850
0.447
0.453
1.168
0.460
0.000
0.000
0.000
0.000

TABLE 270

Ex. (mol %)
ORA-126
ORA-127
ORA-128
ORA-129
ORA-130
ORA-131
ORA-132
ORA-133
ORA-134

SiO₂
58.98
58.50
58.20
58.36
58.82
58.06
58.50
58.41
58.97

Al₂O₃
16.66
17.08
16.22
16.36
16.60
16.27
16.29
16.43
16.39

B₂O₃
6.03
6.12
5.98
6.00
5.85
5.92
5.96
6.08
5.91

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
11.18
11.27
12.14
12.00
12.03
12.10
12.08
12.33
12.05

Na₂O
2.79
2.80
6.09
6.11
6.18
6.09
6.14
6.17
6.15

K₂O
0.10
0.10
0.19
0.20
0.19
0.19
0.20
0.20
0.19

MgO
0.95
0.97
0.01
0.02
0.01
0.01
0.02
0.01
0.01

CaO
1.94
2.00
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZnO
1.01
1.03
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.95
0.01
0.01
0.96
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.005
0.005
0.002
0.048
0.004
0.001
0.051
0.004
0.004

CeO₂
0.000
0.000
0.200
0.002
0.000
0.400
0.000
0.002
0.004

NiO
0.000
0.000
0.000
0.000
0.037
0.000
0.000
0.000
0.000

Co₃O₄
0.035
0.047
0.000
0.001
0.000
0.001
0.000
0.000
0.002

Cr₂O₃
0.049
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

CuO
0.246
0.042
0.000
0.182
0.232
0.000
0.000
0.044
0.279

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.001
0.007
0.000
0.687
0.000
0.000
0.737
0.000
0.001

As₂O₃
0.001
0.001
0.000
0.001
0.000
0.001
0.001
0.001
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.299
0.000

SO₃
0.007
0.000
0.000
0.000
0.010
0.000
0.001
0.000
0.000

Cl
0.009
0.011
0.007
0.009
0.009
0.009
0.009
0.011
0.009

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27P

Ex. (mol %)
ORA-135
ORA-136
ORA-137
ORA-138
ORA-139
ORA-140
ORA-141
ORA-142
ORA-143

SiO₂
58.37
58.70
57.48
58.61
56.91
57.48
58.88
58.26
58.47

Al₂O₃
16.51
16.37
16.31
16.26
16.71
16.60
16.55
16.75
16.46

B₂O₃
6.14
6.07
5.90
5.88
5.94
5.97
5.98
6.09
5.98

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
12.18
12.14
11.91
11.83
11.83
11.87
11.96
12.09
11.59

Na₂O
6.19
6.20
6.08
6.11
6.16
6.17
6.19
6.25
6.18

K₂O
0.19
0.20
0.20
0.19
0.20
0.22
0.19
0.20
0.19

MgO
0.02
0.01
0.02
0.01
0.01
0.02
0.02
0.02
0.01

CaO
0.01
0.01
0.01
0.00
0.01
0.01
0.01
0.01
0.01

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
1.98
0.99
2.00
0.01
0.01
0.01
0.98

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.004
0.003
0.003
0.002
0.107
0.099
0.101
0.003

CeO₂
0.000
0.002
0.101
0.103
0.214
0.000
0.103
0.212
0.106

NiO
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Co₃O₄
0.006
0.004
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Cr₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

CuO
0.359
0.269
0.000
0.000
0.000
0.000
0.000
0.000
0.000

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.001
0.000
0.001
1.514
0.003
0.000
0.000

As₂O₃
0.001
0.001
0.000
0.000
0.000
0.000
0.000
0.000
0.001

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.012
0.000
0.000
0.008
0.000
0.005
0.000

Cl
0.013
0.011
0.013
0.009
0.013
0.013
0.011
0.015
0.011

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27Q

Ex. (mol %)
ORA-144
ORA-145
ORA-146
ORA-147
ORA-148
ORA-149
ORA-150
ORA-151
ORA-152

SiO₂
58.78
58.63
59.36
59.68
60.20
60.62
61.26
61.65
59.16

Al₂O₃
16.19
16.39
16.55
16.53
16.44
16.49
16.37
16.41
16.55

B₂O₃
5.92
5.87
5.78
5.78
5.85
5.88
5.89
5.93
5.92

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
11.60
11.58
11.67
11.82
11.81
11.82
11.78
11.80
11.85

Na₂O
6.11
6.15
6.20
5.69
5.22
4.74
4.25
3.77
6.17

K₂O
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19

MgO
0.01
0.01
0.01
0.02
0.02
0.01
0.02
0.02
0.02

CaO
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.97
0.98
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.002
0.003
0.004
0.004
0.004
0.004
0.004
0.004
0.004

CeO₂
0.199
0.161
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.000
0.000
0.019
0.020
0.018
0.020
0.020
0.020
0.105

Co₃O₄
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Cr₂O₃
0.000
0.000
0.028
0.034
0.030
0.030
0.028
0.029
0.000

CuO
0.000
0.000
0.158
0.196
0.192
0.154
0.163
0.157
0.000

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.001
0.000
0.001

As₂O₃
0.001
0.001
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.006
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Cl
0.011
0.011
0.009
0.009
0.009
0.009
0.007
0.007
0.009

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27R

Ex. (mol %)
ORA-153
ORA-154
ORA-155
ORA-156
ORA-157
ORA-158
ORA-159
ORA-160
ORA-161

SiO₂
59.09
59.33
58.93
59.20
59.10
58.51
59.65
58.74
58.81

Al₂O₃
16.57
16.52
16.51
16.48
16.68
16.44
16.41
16.72
16.49

B₂O₃
5.93
5.85
6.02
5.92
5.87
6.05
5.91
6.00
6.01

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
11.95
11.83
12.04
11.94
11.67
11.97
11.68
11.98
11.85

Na₂O
6.17
6.19
6.20
6.16
6.20
6.18
6.10
6.28
6.20

K₂O
0.19
0.19
0.20
0.19
0.19
0.19
0.19
0.20
0.19

MgO
0.02
0.02
0.02
0.01
0.01
0.02
0.01
0.02
0.01

CaO
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.004
0.004
0.004
0.004
0.004
0.004
0.004
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.058
0.033
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Co₃O₄
0.001
0.000
0.004
0.019
0.000
0.000
0.000
0.000
0.000

Cr₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.014
0.030
0.000

CuO
0.000
0.010
0.058
0.046
0.244
0.617
0.000
0.000
0.402

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.000
0.001
0.000
0.000
0.000
0.000
0.000

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.006
0.000
0.000
0.007
0.000

Cl
0.009
0.009
0.011
0.009
0.009
0.011
0.007
0.013
0.011

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27S

Ex. (mol %)
ORA-162
ORA-163
ORA-164
ORA-165
ORA-166
ORA-167
ORA-168
ORA-169
ORA-170

SiO₂
58.68
58.44
58.49
58.71
59.24
58.85
58.57
58.74
59.78

Al₂O₃
16.47
16.41
16.39
16.49
16.63
16.54
16.54
16.51
16.48

B₂O₃
6.01
5.89
5.79
6.02
5.72
5.96
6.07
6.02
5.96

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
11.98
11.80
11.83
9.89
11.15
10.92
10.51
9.98
10.47

Na₂O
6.21
6.11
6.12
4.28
5.77
5.24
4.77
4.28
4.78

K₂O
0.20
0.21
0.21
0.20
0.19
0.20
0.20
0.20
0.20

MgO
0.02
0.02
0.02
0.04
0.02
0.03
0.04
0.05
0.03

CaO
0.01
0.01
0.01
4.00
1.00
2.00
3.01
3.99
1.99

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.01

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.072
0.071
0.004
0.004
0.004
0.004
0.005
0.004

CeO₂
0.000
0.001
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.000
0.000
0.000
0.000
0.014
0.015
0.015
0.016
0.015

Co₃O₄
0.000
0.000
0.000
0.003
0.002
0.002
0.002
0.002
0.002

Cr₂O₃
0.000
0.000
0.000
0.000
0.026
0.027
0.027
0.027
0.026

CuO
0.410
0.000
0.000
0.338
0.224
0.195
0.213
0.185
0.231

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
1.030
1.031
0.001
0.000
0.000
0.000
0.001
0.000

As₂O₃
0.000
0.000
0.000
0.001
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.002
0.000
0.000
0.000
0.000
0.000
0.006

Cl
0.011
0.009
0.013
0.009
0.007
0.009
0.009
0.009
0.007

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27T

Ex. (mol %)
ORA-171
ORA-172
ORA-173
ORA-174
ORA-175
ORA-176
ORA-177
ORA-178
ORA-179

SiO₂
60.35
59.09
59.09
59.24
58.84
58.90
59.35
58.51
58.20

Al₂O₃
16.50
16.38
16.40
16.33
16.50
16.51
16.27
16.30
16.50

B₂O₃
6.09
5.92
5.97
5.95
5.98
5.97
5.91
5.92
5.89

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
10.25
9.97
9.90
9.91
10.02
9.95
9.92
9.72
9.77

Na₂O
4.29
4.26
4.25
4.25
4.25
4.25
4.24
4.22
4.22

K₂O
0.20
0.20
0.20
0.20
0.20
0.20
0.20
0.21
0.21

MgO
0.03
0.04
0.04
0.04
0.04
0.05
0.04
0.05
0.05

CaO
2.00
3.93
3.95
3.92
4.00
3.98
3.89
3.92
3.97

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.004
0.004
0.004
0.004
0.004
0.004
0.074
0.075

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.015
0.029
0.029
0.000
0.000
0.000
0.000
0.000
0.000

Co₃O₄
0.002
0.009
0.009
0.006
0.006
0.006
0.006
0.000
0.000

Cr₂O₃
0.027
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

CuO
0.219
0.132
0.129
0.132
0.130
0.160
0.155
0.000
0.000

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.001
0.001
0.000
0.000
0.000
0.000
1.056
1.081

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.004
0.000
0.000
0.000
0.006

Cl
0.007
0.009
0.009
0.011
0.009
0.011
0.009
0.009
0.011

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27U

Ex. (mol %)
ORA-180
ORA-181
ORA-182
ORA-183
ORA-184
ORA-185
ORA-186
ORA-187
ORA-188

SiO₂
58.69
58.89
58.60
58.69
57.79
57.28
57.43
57.09
57.38

Al₂O₃
16.22
16.37
16.48
16.37
17.33
17.18
17.16
17.37
17.30

B₂O₃
5.96
6.02
6.05
6.08
6.04
6.31
6.21
6.13
6.17

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
10.10
10.06
10.15
10.20
9.91
10.07
9.97
10.08
10.17

Na₂O
4.22
4.31
4.30
4.28
4.32
4.34
4.32
4.34
4.31

K₂O
0.21
0.20
0.20
0.20
0.20
0.20
0.20
0.20
0.20

MgO
0.05
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.05

CaO
3.88
3.94
3.98
3.95
4.31
4.22
4.26
4.27
4.26

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.57
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.075
0.004
0.004
0.004
0.005
0.004
0.004
0.004
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.000
0.029
0.030
0.028
0.000
0.000
0.000
0.000
0.000

Co₃O₄
0.001
0.009
0.009
0.009
0.000
0.000
0.000
0.000
0.000

Cr₂O₃
0.000
0.000
0.000
0.000
0.015
0.015
0.010
0.010
0.005

CuO
0.001
0.113
0.120
0.119
0.001
0.321
0.370
0.420
0.135

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.000
0.000
0.000
0.001
0.002
0.002
0.001

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.008
0.000
0.000
0.000
0.000
0.000
0.006

Cl
0.011
0.013
0.015
0.013
0.011
0.009
0.009
0.011
0.011

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27V

Ex. (mol %)
ORA-189
ORA-190
ORA-191
ORA-192
ORA-193
ORA-194
ORA-195
ORA-196
ORA-197

SiO₂
58.03
58.38
58.51
57.61
59.47
59.58
59.21
59.10
61.08

Al₂O₃
16.91
16.78
16.62
17.18
16.37
16.35
16.41
16.46
15.56

B₂O₃
6.14
6.05
6.18
6.16
5.81
5.65
5.93
5.93
5.79

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
10.13
10.06
10.08
10.16
9.22
8.75
9.38
8.95
9.29

Na₂O
4.30
4.28
4.28
4.35
3.76
3.28
3.77
3.27
3.79

K₂O
0.20
0.20
0.20
0.20
0.19
0.20
0.20
0.20
0.20

MgO
0.04
0.05
0.05
0.05
0.05
0.06
0.95
1.91
0.05

CaO
4.11
4.07
3.99
4.19
4.89
5.91
3.94
3.95
4.01

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.004
0.004
0.004
0.004
0.005
0.004
0.005
0.005

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.000
0.004
0.000
0.000
0.016
0.015
0.016
0.017
0.016

Co₃O₄
0.008
0.009
0.004
0.004
0.000
0.000
0.000
0.000
0.000

Cr₂O₃
0.019
0.039
0.019
0.039
0.030
0.029
0.028
0.028
0.029

CuO
0.090
0.053
0.045
0.028
0.162
0.164
0.157
0.162
0.160

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.007
0.002
0.001
0.004
0.003
0.004
0.001
0.004

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.002
0.000
0.000
0.000
0.000
0.000
0.001
0.000
0.000

Cl
0.009
0.009
0.009
0.011
0.007
0.007
0.009
0.007
0.009

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27W

Ex. (mol %)
ORA-198
ORA-199
ORA-200
ORA-201
ORA-202
ORA-203
ORA-204
ORA-205
ORA-206

SiO₂
61.52
59.08
59.30
59.66
58.87
61.10
61.75
58.14
58.87

Al₂O₃
15.16
16.42
16.47
16.33
16.67
15.45
15.23
16.87
16.53

B₂O₃
5.98
5.95
5.73
5.77
5.85
5.89
5.57
6.08
5.91

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.02

Li₂O
8.24
9.44
8.83
9.31
8.94
9.43
8.33
9.92
9.92

Na₂O
1.20
3.75
3.26
3.74
3.29
3.77
1.20
4.34
4.29

K₂O
0.20
0.19
0.19
0.19
0.20
0.20
0.20
0.20
0.19

MgO
0.07
0.05
0.06
0.93
1.94
0.05
0.07
0.05
0.05

CaO
7.41
4.92
5.96
3.89
4.05
3.95
7.46
4.19
3.99

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.005
0.005
0.005
0.004
0.005
0.005
0.005
0.004
0.025

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.016
0.031
0.030
0.032
0.033
0.034
0.030
0.029
0.030

Co₃O₄
0.000
0.008
0.008
0.008
0.008
0.008
0.008
0.009
0.009

Cr₂O₃
0.028
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

CuO
0.160
0.122
0.132
0.116
0.124
0.117
0.128
0.146
0.124

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.004
0.000
0.004
0.000
0.002
0.002
0.000
0.020

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.005
0.000
0.000
0.000
0.000
0.005
0.000
0.000

Cl
0.007
0.009
0.007
0.007
0.009
0.009
0.005
0.000
0.000

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27X

Ex. (mol %)
ORA-207
ORA-208
ORA-209
ORA-210
ORA-211
ORA-211
ORA-212
ORA-213
ORA-214

SiO₂
58.64
58.03
58.01
59.08
59.03
59.03
58.05
59.09
62.20

Al₂O₃
16.67
16.82
16.91
16.49
16.44
16.44
16.96
16.53
14.80

B₂O₃
5.97
6.11
6.09
5.87
5.90
5.90
6.03
6.09
6.05

P₂O₅
0.02
0.00
0.00
0.03
0.02
0.02
0.00
0.00
0.00

Li₂O
9.82
10.05
10.04
9.96
9.94
9.94
9.97
11.78
8.89

Na₂O
4.29
4.36
4.35
4.24
4.28
4.28
4.36
6.21
1.41

K₂O
0.19
0.20
0.20
0.19
0.19
0.19
0.20
0.19
0.20

MgO
0.05
0.04
0.05
0.05
0.05
0.05
0.05
0.01
0.06

CaO
4.13
4.17
4.22
3.95
4.02
4.02
4.23
0.01
6.18

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.020
0.020
0.005
0.025
0.019
0.019
0.020
0.004
0.005

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.034
0.030
0.018
0.018
0.017
0.017
0.017
0.019
0.016

Co₃O₄
0.009
0.009
0.002
0.002
0.002
0.002
0.002
0.002
0.000

Cr₂O₃
0.000
0.000
0.027
0.026
0.026
0.026
0.029
0.026
0.029

CuO
0.141
0.136
0.061
0.038
0.045
0.045
0.079
0.028
0.157

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.015
0.002
0.003
0.022
0.014
0.014
0.002
0.001
0.001

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Cl
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27Y

Ex.
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-

(mol %)
215
216
217
218
219
220
221
222
223

SiO₂
61.74
62.49
62.52
62.48
62.06
60.17
60.04
60.22
61.06

Al₂O₃
15.04
14.77
14.73
14.78
15.15
15.89
15.86
15.81
15.39

B₂O₃
6.06
5.96
5.99
5.99
5.88
6.03
6.19
6.14
6.05

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
9.03
8.90
8.91
8.96
8.90
8.81
8.93
8.96
8.94

Na₂O
1.41
1.40
1.41
1.40
1.41
1.40
1.40
1.41
1.40

K₂O
0.20
0.20
0.20
0.20
0.20
0.20
0.20
0.20
0.20

MgO
0.99
1.94
2.92
3.90
5.06
0.07
1.00
1.98
2.88

CaO
5.25
4.10
3.08
2.06
1.07
7.19
6.12
5.02
3.84

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.005
0.005
0.005
0.005
0.005
0.006
0.005
0.005
0.005

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.015
0.017
0.018
0.021
0.018
0.017
0.018
0.018
0.017

Co₃O₄
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Cr₂O₃
0.030
0.028
0.029
0.028
0.029
0.029
0.029
0.029
0.027

CuO
0.221
0.181
0.172
0.181
0.197
0.193
0.196
0.199
0.191

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.001
0.001
0.000
0.000
0.001
0.001
0.001
0.002
0.001

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Cl
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27Z

Ex.
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-

(mol %)
224
225
226
227
228
229
230
231
232

SiO₂
60.16
60.87
58.66
59.73
61.24
61.20
61.14
59.00
59.98

Al₂O₃
15.99
15.63
17.75
16.64
15.39
15.42
15.41
17.77
16.87

B₂O₃
5.99
5.96
6.06
6.05
5.95
5.90
5.91
5.86
6.19

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
8.89
8.88
10.62
10.31
9.93
9.95
9.96
10.51
9.96

Na₂O
1.43
1.42
1.58
1.54
1.50
1.50
1.49
1.60
1.51

K₂O
0.20
0.20
0.20
0.19
0.20
0.20
0.20
0.20
0.20

MgO
4.06
4.91
4.28
4.32
4.24
3.08
1.92
4.28
4.31

CaO
2.99
1.86
0.61
0.97
1.32
2.53
3.74
0.62
0.97

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.005
0.005
0.004
0.004
0.005
0.004
0.005
0.004
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.001

NiO
0.017
0.017
0.017
0.018
0.016
0.015
0.016
0.033
0.000

Co₃O₄
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.009
0.000

Cr₂O₃
0.029
0.028
0.028
0.027
0.028
0.027
0.027
0.000
0.000

CuO
0.230
0.212
0.187
0.175
0.175
0.176
0.169
0.123
0.000

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.003
0.000
0.001
0.001
0.001
0.001
0.001
0.001
0.000

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Cl
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.007

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27AA

Ex.
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-

(mol %)
233
234
235
236
237
238
239
240
241

SiO₂
61.48
60.82
61.59
60.38
59.54
58.78
58.67
58.87
58.93

Al₂O₃
15.58
15.90
15.28
15.51
15.98
16.53
16.55
16.50
16.41

B₂O₂₃
6.03
5.95
6.01
5.93
5.90
6.31
6.19
6.27
6.25

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
9.69
9.52
9.28
8.65
8.69
9.66
9.62
9.59
9.69

Na₂O
1.48
1.44
1.38
1.41
1.52
1.45
1.46
1.46
1.45

K₂O
0.20
0.20
0.20
0.20
0.19
0.19
0.19
0.19
0.19

MgO
4.22
3.17
1.89
2.88
5.05
2.18
2.16
2.17
2.16

CaO
1.31
2.86
4.16
3.83
1.88
4.75
4.78
4.78
4.78

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.99
1.02
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.004
0.004
0.003
0.003
0.005
0.005
0.006
0.005

CeO₂
0.004
0.001
0.000
0.209
0.213
0.000
0.000
0.000
0.000

NiO
0.000
0.008
0.016
0.000
0.000
0.009
0.039
0.040
0.000

Co₃O₄
0.000
0.000
0.000
0.000
0.000
0.001
0.004
0.004
0.004

Cr₂O₃
0.000
0.013
0.026
0.001
0.001
0.014
0.036
0.024
0.035

CuO
0.000
0.098
0.164
0.001
0.000
0.106
0.281
0.101
0.091

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.001
0.003

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Cl
0.005
0.007
0.005
0.009
0.007
0.000
0.000
0.000
0.000

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27BB

Ex.
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-

(mol %)
242
243
244
245
246
247
248
249
250

SiO₂
58.94
59.48
58.54
58.48
58.76
60.53
60.31
61.47
60.28

Al₂O₃
16.76
16.21
16.48
16.62
16.48
15.05
15.08
14.54
15.16

B₂O₃
5.90
6.16
6.32
6.27
6.24
5.91
6.02
5.92
5.81

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
9.32
9.56
9.85
9.80
9.71
10.04
10.08
9.92
9.95

Na₂O
1.47
1.47
1.45
1.45
1.45
1.84
1.86
1.83
1.86

K₂O
0.19
0.20
0.19
0.19
0.19
0.20
0.20
0.19
0.20

MgO
2.20
2.07
2.17
2.18
2.16
2.03
2.02
1.92
2.02

CaO
4.89
4.69
4.73
4.76
4.74
2.09
2.11
1.99
2.13

ZnO
0.00
0.00
0.00
0.00
0.00
1.07
1.07
1.01
1.10

TiO₂
0.01
0.01
0.01
0.01
0.01
1.01
1.02
0.99
1.02

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.005
0.005
0.005
0.005
0.005
0.003
0.004
0.004
0.002

CeO₂
0.000
0.000
0.000
0.000
0.000
0.216
0.218
0.201
0.424

NiO
0.000
0.036
0.022
0.021
0.019
0.000
0.000
0.000
0.000

Co₃O₄
0.001
0.001
0.003
0.003
0.002
0.000
0.000
0.000
0.000

Cr₂O₃
0.025
0.034
0.029
0.030
0.031
0.000
0.000
0.000
0.000

CuO
0.279
0.101
0.212
0.193
0.187
0.000
0.000
0.000
0.000

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.004
0.001
0.000
0.000
0.001
0.000
0.000
0.000
0.000

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.014

Cl
0.000
0.000
0.000
0.000
0.000
0.011
0.009
0.007
0.007

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27CC

Ex.
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-

(mol %)
251
252
253
254
255
256
257
258
259

SiO₂
61.13
60.99
60.54
60.74
59.21
59.45
61.01
61.36
60.91

Al₂O₃
14.65
14.71
15.08
14.92
15.59
15.65
14.78
15.14
14.73

B₂O₃
5.90
5.86
5.89
5.89
6.10
6.05
5.95
5.25
5.98

P₂O₅
0.00
0.05
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
10.00
9.98
9.98
9.98
10.15
9.94
9.81
9.59
9.90

Na₂O
1.83
1.84
1.87
1.86
1.81
1.83
1.76
1.80
1.81

K₂O
0.19
0.19
0.19
0.19
0.18
0.18
0.18
0.18
0.19

MgO
1.94
1.96
2.01
1.49
2.23
2.24
2.09
2.01
2.01

CaO
2.03
2.05
2.11
2.09
2.29
2.26
2.14
2.12
2.09

ZnO
1.02
1.03
1.07
1.59
1.19
1.11
1.07
1.07
1.05

TiO₂
0.99
1.00
1.02
1.01
1.03
1.04
0.99
1.03
1.00

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.10
0.10
0.00
0.00
0.00
0.00
0.00
0.00
0.10

Fe₂O₃
0.004
0.004
0.004
0.003
0.004
0.004
0.004
0.002
0.003

CeO₂
0.206
0.208
0.214
0.208
0.219
0.218
0.209
0.427
0.210

NiO
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Co₃O₄
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Cr₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

CuO
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.021
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.009
0.000
0.000
0.000
0.007
0.000
0.000
0.002

Cl
0.007
0.009
0.007
0.007
0.007
0.005
0.005
0.007
0.007

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27DD

Ex.
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-

(mol %)
260
261
262
263
264
265
266
267
268

SiO₂
60.80
59.47
60.46
64.70
64.67
64.27
64.56
64.76
64.07

Al₂O₃
14.64
15.69
15.29
12.99
13.00
12.89
13.02
12.96
12.95

B₂O₃
5.98
6.03
5.99
5.83
5.81
5.72
5.83
5.74
5.64

P₂O₅
0.05
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
9.99
9.95
9.67
11.98
12.02
11.71
12.07
10.02
9.96

Na₂O
1.74
1.80
1.82
2.81
2.80
2.73
2.82
1.84
1.82

K₂O
0.17
0.18
0.18
0.19
0.20
0.19
0.20
0.20
0.20

MgO
2.05
2.21
1.56
0.01
0.01
0.01
0.01
0.03
0.03

CaO
2.13
2.23
2.16
0.01
0.01
0.01
0.01
2.93
2.98

ZnO
1.13
1.15
1.62
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.99
1.04
1.03
0.98
0.98
0.97
0.98
0.98
0.98

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.10
0.00
0.00
0.05
0.05
0.04
0.05
0.05
0.05

Fe₂O₃
0.003
0.004
0.003
0.002
0.002
0.002
0.002
0.003
0.003

CeO₂
0.212
0.223
0.219
0.201
0.205
0.200
0.207
0.200
0.203

NiO
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Co₃O₄
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Cr₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

CuO
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.021
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.003

Cl
0.007
0.007
0.005
0.012
0.014
1.019
0.016
0.011
0.012

F
0.000
0.000
0.000
0.231
0.231
0.230
0.231
0.266
1.093

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27EE

Ex.
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-

(mol %)
269
270
271
272
273
274
275
276
277

SiO₂
63.99
63.75
63.77
61.32
60.98
63.28
62.41
63.31
62.35

Al₂O₃
12.94
12.77
12.78
15.29
15.41
14.67
14.80
14.64
15.09

B₂O₃
5.78
5.72
5.55
5.84
6.08
5.87
5.93
5.67
5.93

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
9.95
9.65
9.67
9.35
9.57
8.88
8.87
8.78
8.95

Na₂O
1.82
1.78
1.78
1.47
1.42
1.35
1.36
1.36
1.36

K₂O
0.20
0.19
0.19
0.20
0.20
0.00
0.00
0.00
0.00

MgO
0.03
0.03
0.03
1.99
1.96
2.78
2.80
2.75
2.89

CaO
2.96
2.92
2.93
4.23
4.22
1.91
1.94
1.91
2.00

ZnO
0.00
0.00
0.00
0.00
0.00
0.95
0.98
0.97
1.01

TiO₂
0.98
0.97
0.96
0.05
0.01
0.01
0.59
0.29
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.05
0.04
0.04
0.00
0.00
0.00
0.00
0.00
0.10

Fe₂O₃
0.003
0.003
0.003
0.005
0.005
0.002
0.002
0.002
0.002

CeO₂
0.206
0.195
0.198
0.000
0.000
0.299
0.303
0.305
0.308

NiO
0.000
0.000
0.000
0.000
0.022
0.000
0.000
0.000
0.000

Co₃O₄
0.000
0.000
0.000
0.002
0.009
0.000
0.000
0.000
0.000

Cr₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

CuO
0.000
0.000
0.000
0.264
0.113
0.000
0.000
0.000
0.000

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.000
0.001
0.000
0.000
0.000
0.000
0.000

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.000
0.000
0.001
0.000
0.000

Cl
0.011
1.011
1.064
0.000
0.009
0.004
0.004
0.005
0.005

F
1.094
0.989
1.022
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27FF

Ex.
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-

(mol %)
278
279
280
281
282
283
285
286

SiO₂
61.95
63.09
58.67
60.98
61.10
60.60
58.94
60.54

Al₂O₃
15.17
15.05
17.01
17.21
14.87
14.93
14.50
15.63

B₂O₃
5.83
5.88
5.55
4.81
5.95
5.82
5.75
6.08

P₂O₅
0.51
0.50
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
8.90
8.97
8.83
8.11
9.96
10.04
13.39
9.65

Na₂O
1.36
1.36
1.41
1.45
1.86
1.86
1.39
1.47

K₂O
0.00
0.00
0.19
0.20
0.20
0.19
0.19
0.20

MgO
2.92
2.87
2.22
2.19
1.98
1.99
1.79
1.96

CaO
2.00
0.96
4.90
4.90
2.06
2.07
3.99
4.38

ZnO
1.02
1.00
0.00
0.00
0.00
1.04
0.00
0.00

TiO₂
0.01
0.01
1.08
0.01
1.01
1.02
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.57
0.00
0.00
0.00

Fe₂O₃
0.003
0.002
0.005
0.005
0.002
0.002
0.005
0.005

CeO₂
0.316
0.309
0.116
0.122
0.416
0.425
0.000
0.000

NiO
0.000
0.000
0.000
0.000
0.000
0.000
0.003
0.005

Co₃O₄
0.000
0.000
0.000
0.000
0.000
0.000
0.001
0.001

Cr₂O₃
0.000
0.000
0.001
0.001
0.000
0.000
0.000
0.000

CuO
0.000
0.000
0.000
0.000
0.000
0.000
0.045
0.071

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.001

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.002
0.000
0.000
0.022
0.000
0.000
0.000

Cl
0.005
0.004
0.007
0.007
0.005
0.007
0.000
0.000

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27GG

Ex.
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-

(mol %)
287
288
289
290
291
292
293
294
295

SiO₂
60.42
61.34
59.26
59.32
59.30
59.57
59.31
59.28
58.55

Al₂O₃
15.76
15.32
16.06
16.19
16.14
16.03
16.28
16.36
16.45

B₂O₃
6.15
5.94
6.27
6.18
6.25
6.16
6.03
6.10
6.20

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
9.52
9.39
9.69
9.52
9.61
9.59
9.45
9.36
9.72

Na₂O
1.46
1.46
1.48
1.47
1.47
1.47
1.49
1.48
1.46

K₂O
0.20
0.20
0.19
0.19
0.19
0.19
0.19
0.19
0.19

MgO
1.99
1.93
2.17
2.21
2.18
2.15
2.25
2.26
2.34

CaO
4.43
4.25
4.63
4.67
4.60
4.59
4.73
4.74
4.80

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.006
0.005
0.006
0.006
0.006
0.006
0.006
0.006
0.006

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.006
0.023
0.018
0.018
0.018
0.017
0.017
0.018
0.021

Co₃O₄
0.001
0.009
0.002
0.002
0.002
0.002
0.002
0.002
0.002

Cr₂O₃
0.000
0.000
0.030
0.030
0.031
0.029
0.029
0.026
0.028

CuO
0.053
0.116
0.179
0.185
0.190
0.188
0.193
0.188
0.219

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.001
0.001
0.002
0.001
0.000
0.001
0.003
0.000
0.001

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Cl
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27HH

Ex.
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-

(mol %)
296
297
298
299
300
301
302
303
304

SiO₂
59.81
60.62
59.28
59.05
59.84
60.24
60.81
61.20
61.86

Al₂O₃
15.83
15.58
16.34
16.45
15.99
15.84
14.91
14.79
14.33

B₂O₃
6.23
6.09
5.99
6.02
6.09
6.04
6.13
6.11
6.06

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
9.63
9.44
11.71
11.72
9.46
10.42
10.64
12.51
10.59

Na₂O
1.50
1.55
6.22
6.25
1.59
2.57
2.57
2.59
4.49

K₂O
0.20
0.19
0.19
0.20
0.20
0.20
0.19
0.20
0.20

MgO
2.07
1.99
0.02
0.02
2.11
0.05
0.05
0.03
0.03

CaO
4.48
4.26
0.01
0.01
4.40
4.33
4.39
2.28
2.17

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.006
0.007
0.003
0.003
0.005
0.004
0.004
0.004
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.016
0.008
0.011
0.008
0.009
0.009
0.011
0.008
0.010

Co₃O₄
0.002
0.003
0.000
0.001
0.002
0.001
0.002
0.001
0.001

Cr₂O₃
0.029
0.027
0.024
0.027
0.028
0.028
0.029
0.028
0.027

CuO
0.189
0.222
0.173
0.219
0.243
0.239
0.249
0.235
0.219

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.003
0.001
0.004
0.000
0.003
0.004
0.001
0.000
0.000

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.010
0.000
0.000
0.000
0.002

Cl
0.000
0.000
0.011
0.011
0.009
0.013
0.011
0.009
0.011

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 2711

Ex.
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-

(mol %)
305
306
307
308
309
310
311
312
313

SiO₂
61.95
61.15
60.57
61.14
61.00
60.47
60.78
60.81
61.72

Al₂O₃
14.34
14.82
14.66
14.53
14.33
14.61
14.55
14.61
14.54

B₂O₃
6.01
6.02
6.06
5.91
6.04
6.02
6.01
5.97
5.97

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
10.57
10.62
11.00
12.82
11.15
11.14
11.10
11.03
11.15

Na₂O
2.53
2.57
2.88
2.88
4.80
2.91
2.88
2.87
2.84

K₂O
1.17
0.20
0.19
0.19
0.19
1.18
0.20
0.48
0.19

MgO
0.04
2.07
0.05
0.03
0.03
0.04
1.98
1.69
1.06

CaO
3.12
2.27
4.33
2.24
2.17
3.30
2.23
2.26
2.25

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.004
0.004
0.004
0.004
0.004
0.004
0.004
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.008
0.008
0.009
0.008
0.008
0.009
0.008
0.008
0.007

Co₃O₄
0.001
0.002
0.001
0.002
0.001
0.001
0.002
0.001
0.002

Cr₂O₃
0.027
0.028
0.028
0.027
0.026
0.027
0.027
0.027
0.027

CuO
0.219
0.238
0.209
0.208
0.222
0.260
0.212
0.212
0.219

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.003
0.001
0.000
0.000
0.000
0.000
0.000
0.000
0.000

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.011
0.000
0.000
0.000
0.000

Cl
0.011
0.007
0.009
0.011
0.009
0.013
0.007
0.009
0.009

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27JJ

Ex.
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-

(mol %)
314
315
316
317
318
319
320
321
322

SiO₂
61.88
61.90
59.24
58.96
58.61
59.56
58.58
58.78
58.94

Al₂O₃
14.54
14.59
16.01
16.03
16.22
16.07
16.18
16.41
16.13

B₂O₃
6.00
5.90
6.00
6.26
6.25
5.89
6.25
5.95
6.12

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
11.95
11.43
10.10
10.11
10.07
9.74
10.08
9.86
10.05

Na₂O
2.87
3.34
1.47
1.47
1.47
1.48
1.47
1.47
1.49

K₂O
0.19
0.19
0.19
0.19
0.19
0.20
0.19
0.19
0.19

MgO
0.03
0.03
2.15
2.15
2.24
2.16
2.31
2.30
2.22

CaO
2.25
2.28
4.55
4.57
4.67
4.62
4.67
4.78
4.62

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.004
0.006
0.006
0.006
0.006
0.006
0.006
0.006

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.010
0.009
0.020
0.020
0.019
0.017
0.020
0.016
0.018

Co₃O₄
0.001
0.001
0.002
0.002
0.002
0.002
0.002
0.002
0.002

Cr₂O₃
0.027
0.028
0.030
0.029
0.031
0.029
0.030
0.023
0.029

CuO
0.203
0.262
0.214
0.187
0.197
0.203
0.191
0.193
0.183

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.000
0.003
0.001
0.002
0.002
0.002
0.001

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.010
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Cl
0.009
0.009
0.000
0.000
0.000
0.000
0.000
0.000
0.000

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27KK

Ex.
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-

(mol %)
323
324
325
326
327
328
329
330
331

SiO₂
60.45
60.59
60.02
60.41
59.73
60.46
60.17
60.03
61.68

Al₂O₃
15.53
15.42
15.80
15.59
16.01
15.63
15.79
15.79
15.01

B₂O₃
5.89
5.98
6.00
6.00
6.01
6.00
6.00
5.99
5.96

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
9.95
9.47
9.51
9.51
9.52
9.50
9.51
9.49
9.44

Na₂O
1.45
1.41
1.30
1.42
1.40
1.40
1.26
1.40
1.38

K₂O
0.19
0.18
0.18
0.19
0.19
0.19
0.18
0.19
0.19

MgO
1.98
2.14
2.22
2.12
2.22
2.07
2.19
2.18
1.95

CaO
4.28
4.57
4.71
4.52
4.67
4.52
4.65
4.67
4.16

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.006
0.006
0.006
0.006
0.006
0.006
0.006
0.006
0.005

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.018
0.018
0.018
0.017
0.019
0.012
0.019
0.015
0.017

Co₃O₄
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002
0.002

Cr₂O₃
0.028
0.030
0.031
0.030
0.030
0.029
0.029
0.029
0.028

CuO
0.209
0.180
0.185
0.181
0.187
0.182
0.185
0.185
0.173

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.002
0.002
0.003
0.001
0.001
0.001
0.000
0.001
0.001

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Cl
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27LL

Ex.
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-

(mol %)
332
333
334
335
336
337
338
339
340

SiO₂
61.47
61.47
61.51
61.27
61.46
61.87
61.25
61.30
61.64

Al₂O₃
15.03
15.11
15.06
15.13
15.05
14.90
15.13
15.02
14.94

B₂O₃
5.96
5.99
5.97
5.97
5.98
5.92
6.04
5.90
5.84

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
12.21
12.11
12.06
12.22
12.23
12.02
12.17
12.35
12.33

Na₂O
3.92
3.95
3.94
3.95
3.92
3.93
3.95
3.93
3.90

K₂O
0.39
0.39
0.39
0.39
0.39
0.40
0.39
0.39
0.39

MgO
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02

CaO
0.77
0.77
0.77
0.77
0.77
0.75
0.77
0.77
0.75

ZnO
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.004
0.004
0.004
0.004
0.004
0.004
0.004
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.014
0.007
0.005
0.005
0.004
0.019
0.021
0.024
0.023

Co₃O₄
0.002
0.001
0.001
0.002
0.002
0.001
0.001
0.002
0.002

Cr₂O₃
0.025
0.023
0.029
0.024
0.027
0.023
0.030
0.023
0.028

CuO
0.181
0.154
0.234
0.232
0.137
0.134
0.209
0.251
0.136

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.000
0.000
0.002
0.000
0.000
0.000
0.001
0.000
0.000

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Cl
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27MM

Ex.
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-
ORA-

(mol %)
341
342
343
344
345
346
347
348
349

SiO₂
61.24
58.93
58.82
58.94
58.90
61.76
62.65
63.64
64.54

Al₂O₃
15.06
16.47
16.44
16.45
16.45
15.01
15.08
14.99
15.05

B₂O₃
6.06
5.91
5.95
5.92
5.92
5.81
4.87
3.93
2.96

P₂O₅
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Li₂O
12.33
10.13
10.23
12.25
12.30
12.33
12.32
12.36
12.30

Na₂O
3.92
4.26
4.26
6.19
6.19
3.78
3.78
3.79
3.82

K₂O
0.39
0.29
0.29
0.20
0.20
0.39
0.38
0.39
0.39

MgO
0.02
2.98
2.97
0.02
0.02
0.03
0.03
0.03
0.04

CaO
0.76
0.03
0.03
0.01
0.01
0.61
0.62
0.62
0.64

ZnO
0.00
0.99
0.99
0.00
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.004
0.004
0.003
0.003
0.004
0.004
0.004
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

NiO
0.018
0.000
0.000
0.000
0.000
0.019
0.022
0.022
0.021

Co₃O₄
0.002
0.000
0.000
0.000
0.000
0.002
0.002
0.002
0.002

Cr₂O₃
0.025
0.000
0.000
0.000
0.000
0.021
0.021
0.022
0.022

CuO
0.145
0.000
0.000
0.000
0.000
0.206
0.199
0.184
0.203

HfO₂
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

MnO₂
0.004
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

As₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

SO₃
0.000
0.000
0.000
0.000
0.000
0.021
0.000
0.002
0.000

Cl
0.000
0.011
0.011
0.014
0.014
0.007
0.007
0.007
0.011

F
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

TABLE 27NN

Ex. (mol %)
ORA-350
ORA-351
ORA-352
ORA-353
ORA-354

SiO₂
65.24
66.43
61.57
61.66
61.64

Al₂O₃
15.13
15.10
15.07
15.16
15.12

B₂O₃
2.02
1.03
5.87
5.82
5.81

P₂O₅
0.00
0.00
0.00
0.00
0.00

Li₂O
12.43
12.27
12.38
12.29
12.38

Na₂O
3.81
3.82
3.82
3.79
3.78

K₂O
0.41
0.40
0.39
0.39
0.38

MgO
0.04
0.03
0.03
0.03
0.03

CaO
0.64
0.64
0.63
0.65
0.67

ZnO
0.00
0.00
0.00
0.00
0.00

TiO₂
0.01
0.01
0.01
0.01
0.01

ZrO₂
0.00
0.00
0.00
0.00
0.00

WO₃
0.00
0.00
0.00
0.00
0.00

SnO₂
0.00
0.00
0.00
0.00
0.00

Fe₂O₃
0.004
0.004
0.004
0.004
0.004

CeO₂
0.000
0.000
0.000
0.000
0.000

NiO
0.020
0.022
0.023
0.023
0.022

Co₃O₄
0.002
0.002
0.002
0.002
0.001

Cr₂O₃
0.022
0.022
0.021
0.022
0.021

CuO
0.219
0.212
0.174
0.137
0.123

HfO₂
0.000
0.000
0.000
0.000
0.000

MnO₂
0.001
0.000
0.004
0.000
0.001

As₂O₃
0.000
0.000
0.000
0.000
0.000

Sb₂O₃
0.000
0.000
0.000
0.000
0.000

V₂O₅
0.000
0.000
0.000
0.000
0.000

SO₃
0.004
0.000
0.000
0.007
0.000

Cl
0.011
0.011
0.009
0.007
0.007

F
0.000
0.000
0.000
0.000
0.000

Nd₂O₃
0.000
0.000
0.000
0.000
0.000

Er₂O₃
0.000
0.000
0.000
0.000
0.000

Referring now to Table 28, colored glass articles in the form of glass coupons were produced from the glass compositions of Tables 27A-27NN. The glass coupons had the indicated thicknesses. The CIELAB L*, a*, and b* coordinates of each colored glass article were determined. The average transmittance (%) for each sample over the wavelength range from 380 nm to 750 nm was also determined. The results are reported in Table 28.

TABLE 28

Average

transmittance

Thickness
(380 nm-

Example
L*
a*
b*
(mm)
750 nm)

ORA-1
54.3
−2.25
−23.3
1.496
38.08

ORA-2
53.5
5.59
−47.3
1.504
45.89

ORA-3
73.5
−1.65
3.45
1.518
56.14

ORA-4
58.6
−2.44
−0.74
1.355
42.35

ORA-5
81.6
−6.19
26.71
1.503
48.95

ORA-6
80.9
−10.9
60.97
1.551
44.81

ORA-6
82.2
−11.5
61.28
1.52
46.21

ORA-7
84
2.38
24.44
1.51
67.97

ORA-8
86
−9.09
−0.48
1.499
56.39

ORA-8
85.7
−9.4
−0.84
1.502
55.96

ORA-8
85.7
−9.37
−0.86
1.5
55.85

ORA-9
60.3
2.68
−46.7
1.5
52.41

ORA-10
81.4
−12.9
44.23
1.496
45.38

ORA-11
96.2
−1.07
6.85
1.534
82.97

ORA-11
96.1
−1.08
7
1.53
82.78

ORA-12
96.6
−0.46
2.3
1.34
87.06

ORA-14
96.3
−0.49
0.14
1.516
89.66

ORA-15
85.6
−1.05
2.82
1.504
72.58

ORA-16
80
−7.58
−2.04
1.51
52.17

ORA-17
74.4
−1.63
2.16
1.509
58.32

ORA-18
88.8
−3.39
17.58
1.505
66.53

ORA-21
77.1
−17.9
8.2
1.453
39.68

ORA-22
87
−8.47
5.42
1.33
64.68

ORA-23
95.3
−0.43
0.29
1.34
88.58

ORA-23
95.3
−0.43
0.43
1.34
88.58

ORA-24
65.9
−2.01
−18.5
1.33
51.58

ORA-25
81.5
−5.99
−3.18
1.535
58.24

ORA-26
77.9
−9.15
−1.49
1.537
47.20

ORA-27
73.6
−11.9
1.72
1.526
37.11

ORA-28
68.3
−14.4
6.15
1.538
27.56

ORA-29
55.7
−17.4
17.39
1.554
13.76

ORA-30
41.5
−16.8
27.15
1.553
5.89

ORA-31
89.8
−0.72
16.26
1.4
72.68

ORA-32
26.9
−12
15.29
1.32
3.08

ORA-33
65.6
−2.29
−12.4
1.31
50.51

ORA-34
79.1
−13.5
10.74
1.31
46.61

ORA-35
95
−1.05
−1.88
1.32
87.51

ORA-36
46.4
−17.7
−13.5
1.3
13.49

ORA-37
42.9
−1.87
−22.3
1.34
33.01

ORA-38
43.4
−0.37
−42
1.33
28.23

ORA-39
60.9
−2.38
0.5
1.32
44.34

ORA-40
94.3
−0.51
8.43
1.34
84.53

ORA-41
87.1
−8.58
5.19
1.32
64.68

ORA-42
95.2
−0.73
−0.52
1.31
88.13

ORA-43
65.5
−2.16
−19.2
1.35
50.85

ORA-44
59.3
−2.83
−0.51
1.34
42.93

ORA-45
94.5
−0.38
9.12
1.31
85.15

ORA-46
86.6
−9.29
5.62
1.31
62.94

ORA-47
95.4
−0.61
−0.79
1.34
88.84

ORA-48
65.2
−2.41
−20.2
1.29
50.75

ORA-49
57.6
−3.12
−2.32
1.34
41.79

ORA-50
94.3
−0.35
9.09
1.33
84.83

ORA-51
66.3
−1.99
−18.3
1.32
51.94

ORA-52
90
−1.31
−2.91
1.31
79.81

ORA-52
89.2
−1.62
−3.62
1.29
78.10

ORA-53
66.3
−1.99
−19.6
1.33
51.11

ORA-53
66.6
−2.1
−19.5
1.33
51.36

ORA-54
88.8
−6.42
4.63
1.33
65.58

ORA-54
88.8
−6.54
4.6
1.35
65.42

ORA-56
68.8
−6.69
−18.2
1.32
43.78

ORA-56
69.6
−6.37
−17.8
1.29
45.12

ORA-57
83
−4
−7.77
1.29
65.47

ORA-57
83.6
−3.74
−7.38
1.29
66.76

ORA-58
64.6
−2.21
−20.4
1.29
49.14

ORA-58
64.1
−2.17
−20.6
1.29
48.62

ORA-59
89
−1.7
−3.4
1.3
77.55

ORA-60
67
−1.93
−18.2
1.29
51.74

ORA-61
93.4
−0.84
7.53
1.34
83.00

ORA-62
63.5
−11.9
−9.2
1.31
28.70

ORA-63
83.1
−3.99
−6.93
1.27
65.15

ORA-64
62.7
−2.12
−21.6
1.31
46.93

ORA-65
87.2
−8.3
5.82
1.33
65.10

ORA-66
93.7
−0.3
9.8
1.36
83.86

ORA-67
74.4
−2.49
32.99
1.14
46.62

ORA-68
90.5
−4.5
−5.85
1.34
74.29

ORA-69
68.8
−7.32
−15.8
1.33
42.51

ORA-70
68
−4.44
−20.9
1.35
47.23

ORA-71
57
−2.73
−5.3
1.37
41.30

ORA-72
63.6
−2.73
−18.7
1.42
46.95

ORA-73
96.1
−0.12
3.25
1.35
89.72

ORA-74
55.7
−2.73
0.04
1.36
39.84

ORA-75
62.8
−2.25
−5.79
1.36
47.14

ORA-76
96.8
−0.02
0.27
1.35
91.59

ORA-77
95.9
0.01
0.7
1.33
88.60

ORA-78
65.4
0.92
−37.5
1.36
53.47

ORA-79
76.6
−2.14
−16.2
0.621
63.69

ORA-79
76.6
−2.14
−16.2
0.621
63.69

ORA-79
76.6
−2.14
−16.2
0.621
63.69

ORA-80
96.7
−0.25
−0.13
0.62
91.23

ORA-80
96.7
−0.25
−0.13
0.62
91.23

ORA-80
96.7
−0.25
−0.13
0.62
91.23

ORA-81
71.2
−2.05
−7.46
0.643
56.43

ORA-81
71.2
−2.05
−7.46
0.643
56.43

ORA-81
71.2
−2.05
−7.46
0.643
56.43

ORA-82
86.6
−1.81
−6.31
1.33
74.45

ORA-83
96.9
−0.02
0.12
1.24
92.02

ORA-84
96.7
−0.11
0.25
1.3
91.05

ORA-85
96.8
−0.07
0.21
1.32
91.52

ORA-86
96.9
−0.03
0.21
1.28
91.43

ORA-87
96.7
−0.02
0.47
1.25
91.39

ORA-88
79.3
−4.44
−11.8
1.26
60.21

ORA-89
60.4
−8.61
−17.1
1.34
31.09

ORA-90
67.8
−6.25
−30.3
1.34
46.93

ORA-91
62.4
−6.04
−26.3
1.35
38.76

ORA-92
63
−10.3
−24.5
1.35
38.11

ORA-93
64.1
−8.04
−28.3
1.33
41.34

ORA-94
65.3
−6.48
−29.5
1.33
43.18

ORA-95
84.5
−12.4
12.15
1.29
52.71

ORA-96
83
−13.6
13.11
1.35
49.38

ORA-97
90.1
−8.32
29.93
1.3
61.02

ORA-98
91
−2.23
−8.98
1.23
85.94

ORA-99
87.2
−2.88
−14.4
1.26
81.26

ORA-100
82.2
−2.53
−20.6
1.27
74.80

ORA-101
79.7
−3.97
−10.2
1.29
68.13

ORA-102
78
−4.64
−0.58
1.3
62.62

ORA-103
76.4
−5.2
6.85
1.28
58.13

ORA-104
81.8
−2.5
−21.2
1.31
74.47

ORA-105
81.5
−2.5
−21.7
1.31
74.29

ORA-106
81.6
−2.62
−21.8
1.25
74.67

ORA-107
88.2
−6.98
0.45
1.2
69.06

ORA-108
88.5
−6.04
2.77
1.22
69.99

ORA-109
90.6
−5.74
6.05
1.2
71.88

ORA-110
90.6
−5.52
7.3
1.2
72.19

ORA-111
90.3
−5.35
9.22
1.28
70.83

ORA-112
90.5
−5.31
8.41
1.28
70.71

ORA-113
90.8
−4.31
9.47
1.28
72.44

ORA-114
96.8
−0.06
0.39
1.27
91.19

ORA-115
90
−5.24
7.76
1.29
70.45

ORA-116
95.8
3.04
−0.87
1.348
88.26

ORA-117
93.7
7.94
−1.71
1.349
81.56

ORA-118
91.7
3.05
10.6
1.35
79.00

ORA-119
93.9
3
4.49
1.35
83.88

ORA-120
93.4
5.72
3.16
1.336
81.16

ORA-121
87.6
2.01
−11.4
1.348
77.16

ORA-122
68.3
−2.07
−0.58
1.348
51.93

ORA-123
69.5
−8.73
−13
1.341
45.19

ORA-124
68.1
−1.99
−0.92
1.348
51.96

ORA-125
70.4
−8.27
−13.1
1.315
46.55

ORA-126
68
−9.3
−15.1
1.32
43.43

ORA-127
65.6
−2.31
−3.05
1.346
49.46

ORA-128
95.1
−0.8
8.89
1.307
79.31

ORA-129
95.2
−0.91
5.02
1.324
83.78

ORA-130
93.2
−1.14
3.86
1.327
81.89

ORA-131
78.2
4.27
62.38
1.258
45.39

ORA-132
96.1
−0.4
3.04
1.297
87.72

ORA-133
95
−1.08
5.27
1.299
79.59

ORA-134
92.2
−3.32
−5.34
1.252
79.12

ORA-135
88.4
−4.18
−9.77
1.345
72.86

ORA-136
91.1
−3.29
−7
1.282
78.05

ORA-137
91.9
−1.07
25.91
1.287
68.35

ORA-138
96.7
−0.26
1.46
1.336
88.98

ORA-139
88.5
−0.11
48.07
1.334
59.06

ORA-140
94.5
−1.1
11.46
1.279
79.19

ORA-141
96.1
−0.18
1.02
1.332
88.70

ORA-142
96.2
−0.17
1.49
1.337
88.52

ORA-143
96.7
−0.28
1.5
1.318
88.86

ORA-144
96.1
−0.73
5.28
1.307
83.38

ORA-145
96.6
−0.44
2.41
1.336
87.24

ORA-146
88.8
−7.87
4.43
1.413
67.88

ORA-147
87.6
−8.98
6.75
1.431
64.56

ORA-148
89
−7.38
6.6
1.403
67.49

ORA-149
88.9
−7.22
8.14
1.423
66.30

ORA-150
89.2
−6.44
8.75
1.407
67.20

ORA-151
89.4
−5.91
9.7
1.416
67.40

ORA-152
90.4
0.96
13.31
1.293
78.86

ORA-153
92.9
0.53
8.35
1.3
83.61

ORA-154
94.5
0.2
4.69
1.319
86.92

ORA-155
93.3
−0.72
−4.48
1.307
86.34

ORA-156
81.8
−1.41
−19
1.305
71.94

ORA-157
95.4
−1.73
−1.38
1.29
86.14

ORA-157
95.4
−1.74
−1.39
1.29
86.24

ORA-158
91.5
−5.47
−3.07
1.291
72.48

ORA-158
91.6
−5.45
−3.08
1.297
72.65

ORA-159
95.2
−2.99
9.81
1.297
79.31

ORA-160
93.6
−6.18
23.4
1.313
69.68

ORA-161
92.6
−4.67
−3.67
1.337
76.40

ORA-162
92.8
−4.35
−3.35
1.323
77.22

ORA-163
95.4
−0.71
6.06
1.373
84.14

ORA-164
95.2
−0.7
6.73
1.364
83.63

ORA-165
94.5
−1.61
−2.24
0.591
85.07

ORA-165
94.5
−1.61
−2.24
0.591
85.07

ORA-166
88.8
−6.46
1.89
1.379
70.52

ORA-167
88.7
−6.58
1.85
1.377
70.18

ORA-168
88.5
−6.82
1.68
1.372
69.73

ORA-169
93.2
−2.95
1.1
0.594
81.55

ORA-169
88.8
−6.58
2
1.346
70.28

ORA-169
93.2
−2.95
1.1
0.594
81.55

ORA-169
88.8
−6.58
2
1.346
70.28

ORA-170
89.1
−5.87
4.95
1.318
69.39

ORA-171
89
−6.19
3.17
1.31
70.18

ORA-172
87.1
−1.71
−5.56
1.351
75.02

ORA-173
86.9
−1.8
−5.68
1.336
74.68

ORA-174
91
−1.63
−7.21
1.333
81.25

ORA-175
90.9
−1.63
−7.29
1.334
81.23

ORA-176
90.8
−1.78
−7.35
1.334
80.73

ORA-177
90.8
−1.79
−7.47
1.341
80.64

ORA-178
95.4
−0.71
6
1.345
83.71

ORA-179
95.3
−0.71
6.32
1.305
83.46

ORA-180
87.5
−1.64
−5.58
1.297
75.73

ORA-181
87.2
−1.67
−5.61
1.344
75.35

ORA-182
87.3
−1.66
−5.44
1.319
75.35

ORA-183
95.3
−0.74
5.85
1.32
83.75

ORA-184
95
−3.11
9.96
1.329
78.73

ORA-185
92.2
−5.34
−0.33
1.316
76.11

ORA-186
92.9
−4.43
−0.54
1.314
78.05

ORA-187
91.3
−6.12
−2
1.322
72.83

ORA-188
95.8
−1.22
0.53
1.326
88.30

ORA-189
86.7
−3.8
−7.01
1.309
73.91

ORA-190
83.9
−7.84
0.86
1.293
60.45

ORA-191
90
−3.89
−1.84
1.313
76.65

ORA-192
88.2
−8.1
16.38
1.31
61.57

ORA-193
89.3
−7.44
4.68
1.354
69.18

ORA-194
89.9
−6.8
4.48
1.363
70.85

ORA-195
90.1
−6.59
4.83
1.362
71.57

ORA-196
90
−6.64
4.98
1.365
71.16

ORA-197
90
−6.81
4.19
1.382
71.46

ORA-198
90.5
−5.77
5.27
1.361
72.91

ORA-199
86.9
−1.7
−5.41
1.364
74.70

ORA-200
87
−1.74
−5.51
1.364
74.67

ORA-201
87.3
−1.89
−4.41
1.376
74.90

ORA-202
87.8
−1.81
−3.85
1.358
75.67

ORA-203
86.9
−1.61
−4.9
1.389
74.89

ORA-204
87.2
−1.62
−5.07
1.355
75.24

ORA-205
87.4
−1.7
−5.65
1.314
75.59

ORA-205
87.3
−1.67
−5.68
1.315
75.37

ORA-206
87.9
−1.23
−3.69
1.302
76.36

ORA-206
88
−1.25
−3.65
1.301
76.58

ORA-207
87.5
−1.37
−3.75
1.309
75.65

ORA-207
87.4
−1.36
−3.78
1.308
75.41

ORA-208
87.6
−1.45
−4.46
1.312
75.88

ORA-208
87.5
−1.43
−4.48
1.314
75.62

ORA-209
90.4
−4.83
6.02
1.3
72.97

ORA-209
90.5
−4.84
6.06
1.302
73.14

ORA-210
91
−3.76
5.05
1.315
77.53

ORA-210
90.9
−3.74
5.02
1.317
77.31

ORA-211
90.6
−4.15
5.26
1.346
75.81

ORA-211
90.5
−4.12
5.23
1.347
75.68

ORA-212
90.1
−4.9
4.65
1.308
74.40

ORA-212
90.2
−4.89
4.68
1.314
74.67

ORA-213
90.6
−5.49
13.08
1.323
68.09

ORA-213
90.7
−5.51
13.1
1.326
68.27

ORA-214
92.8
−3.85
3.17
0.845
79.23

ORA-215
92.7
−3.99
3.32
0.847
78.78

ORA-216
92.8
−3.83
3.41
0.845
79.16

ORA-217
90.4
−6
5.4
1.341
72.46

ORA-218
90.8
−5.49
5.48
1.323
73.73

ORA-219
90.7
−5.64
5.2
1.322
73.41

ORA-220
90.3
−6.17
4.9
1.368
71.92

ORA-221
90.3
−6.16
5.17
1.359
72.03

ORA-222
93.9
−2.73
2.55
0.59
82.65

ORA-222
90.3
−6.15
5.5
1.362
72.03

ORA-223
90.1
−6.28
5.36
1.383
71.59

ORA-224
90.5
−5.94
5.3
1.385
72.56

ORA-225
90.6
−5.8
5.38
1.384
72.92

ORA-226
90.7
−5.24
5.85
1.339
73.19

ORA-227
91
−5.02
5.84
1.342
74.24

ORA-228
90.8
−5.53
5.47
1.337
73.77

ORA-229
90.9
−5.58
5.08
1.332
73.87

ORA-230
94
−2.69
2.43
0.6
82.99

ORA-230
90.8
−5.65
5.25
1.337
73.64

ORA-231
89.7
−1.37
−2
1.329
78.60

ORA-232
96.8
−0.02
0.21
1.322
91.63

ORA-233
96.8
−0.03
0.23
1.318
91.77

ORA-234
93.8
−2.97
2.61
1.327
82.14

ORA-235
90.6
−5.94
5.03
1.321
72.83

ORA-236
96.6
−0.33
1.63
1.322
87.69

ORA-237
96.6
−0.32
1.56
1.332
87.82

ORA-238
93
−3.03
1.62
1.291
81.13

ORA-238
93
−3.03
1.62
1.291
81.13

ORA-239
85.7
−8.09
5.15
1.326
62.69

ORA-240
88.7
−4.59
5.53
1.332
72.22

ORA-241
89.1
−6.01
1.55
1.314
72.28

ORA-242
90.4
−6.46
0.69
1.321
72.03

ORA-243
89.2
−5.77
8.31
1.315
70.97

ORA-244
89
−6.09
3.66
1.292
70.53

ORA-245
88.8
−6.28
4.01
1.287
70.10

ORA-246
88.8
−6.35
3.73
1.29
70.14

ORA-247
96.6
−0.38
1.95
1.349
87.28

ORA-248
96.6
−0.38
2
1.333
87.22

ORA-249
96.7
−0.28
1.45
1.343
88.96

ORA-250
96.3
−0.83
4.74
1.349
82.83

ORA-251
96.6
−0.27
1.67
1.339
89.17

ORA-252
96.6
−0.31
1.88
1.371
88.85

ORA-253
96.6
−0.29
1.56
1.381
88.86

ORA-254
96.6
−0.41
2.15
1.369
86.92

ORA-255
96.6
−0.42
2.15
1.354
86.72

ORA-256
96.6
−0.41
2.11
1.375
86.92

ORA-257
96.6
−0.32
2.01
1.414
88.77

ORA-258
96.3
−0.87
4.96
1.411
82.51

ORA-259
96.6
−0.32
1.91
1.401
88.78

ORA-260
96.6
−0.31
1.83
1.404
88.95

ORA-261
96.7
−0.27
1.44
1.315
89.03

ORA-262
96.6
−0.41
2.11
1.332
86.94

ORA-263
96.7
−0.34
1.83
1.263
88.74

ORA-264
96.8
−0.36
1.89
1.324
88.80

ORA-265
96.8
−0.34
1.81
1.272
88.97

ORA-266
96.8
−0.33
1.75
1.261
88.99

ORA-267
96.8
−0.26
1.43
1.263
89.53

ORA-268
96.8
−0.28
1.51
1.304
89.42

ORA-269
96.8
−0.28
1.56
1.321
89.37

ORA-270
96.8
−0.23
1.4
1.327
89.74

ORA-271
96.8
−0.21
1.32
1.28
89.88

ORA-272
92.8
−3.11
−4.14
1.369
79.89

ORA-273
89.3
−1.59
−4.49
1.23
78.30

ORA-274
96.6
−0.2
1.2
1.289
88.42

ORA-275
96.6
−0.31
1.69
1.299
87.36

ORA-276
96.6
−0.26
1.45
1.315
87.84

ORA-277
96.7
−0.01
0.21
1.298
91.71

ORA-278
96.7
−0.19
1.11
1.303
88.71

ORA-279
96.7
−0.19
1.05
1.243
88.99

ORA-280
96.5
−0.19
1.08
1.367
88.79

ORA-281
96.6
−0.02
0.34
1.365
90.95

ORA-282
96.1
−0.91
5.37
1.335
82.02

ORA-283
96.2
−0.87
5.01
1.362
82.65

ORA-285
95.4
−0.54
−0.7
1.3
88.76

ORA-286
95.4
−0.53
−0.43
1.213
88.69

ORA-287
95.5
−0.46
−0.44
1.247
88.87

ORA-288
88.2
−1.61
−5.12
1.358
76.98

ORA-289
88.8
−6.53
3.4
1.303
69.77

ORA-290
88.6
−6.67
3.46
1.347
69.42

ORA-291
88.6
−6.64
3.63
1.337
69.49

ORA-292
88.9
−6.44
3.1
1.315
70.14

ORA-293
89.1
−6.33
3.54
1.317
70.63

ORA-294
90.1
−5.12
2.87
1.283
73.82

ORA-295
88.7
−6.52
3.65
1.295
69.94

ORA-296
89.1
−6.18
2.93
1.284
70.87

ORA-297
89.3
−5.84
2.18
1.276
71.76

ORA-298
85.5
−9.77
1.11
1.983
62.28

ORA-299
83.3
−11.3
−2.01
1.942
58.42

ORA-300
84.4
−10.1
1.39
1.985
59.90

ORA-301
83.9
−10.7
0.11
1.976
59.06

ORA-302
84.1
−10.3
−0.85
1.99
60.61

ORA-303
83.9
−10.9
−2.46
1.974
60.24

ORA-304
83.6
−11.1
−2.68
2.024
59.85

ORA-305
83.4
−11.3
−2.58
2.013
59.25

ORA-306
83.9
−11
−0.94
2.023
59.74

ORA-307
83.9
−10.6
−2.28
2.021
60.85

ORA-308
83.9
−10.8
−3.2
2.019
60.99

ORA-309
83.4
−11.3
−4.16
2.014
59.89

ORA-310
82.9
−11.9
−4.29
2.008
58.39

ORA-311
84.1
−10.8
−1.86
2.022
60.79

ORA-312
84.4
−10.5
−1.75
2.011
61.54

ORA-313
84.1
−10.8
−1.53
2.022
60.38

ORA-314
84.1
−10.6
−1.84
2.014
60.78

ORA-315
84
−10.5
−1.42
2.024
60.65

ORA-316
88.4
−6.82
3.86
1.36
68.96

ORA-317
88.5
−6.69
3.82
1.351
69.77

ORA-318
88.7
−6.56
4.04
1.338
69.78

ORA-319
88.8
−6.52
3.2
1.351
69.96

ORA-320
88.6
−6.59
3.6
1.35
69.49

ORA-321
90
−5.2
2.89
1.341
73.54

ORA-322
88.7
−6.57
3.72
1.342
69.95

ORA-323
88.7
−6.5
3.67
1.347
69.93

ORA-324
84.9
−9.6
5.11
2.025
61.02

ORA-325
84.7
−9.71
5.35
2.05
60.45

ORA-326
84.9
−9.54
5.42
2.044
60.89

ORA-327
84.9
−9.44
5.75
2.041
60.80

ORA-328
85.7
−9.03
4.42
2.067
62.94

ORA-329
85.1
−9.12
5.7
2.062
61.55

ORA-330
85.3
−9.36
4.7
2.068
61.81

ORA-331
85.1
−9.15
5.71
2.064
61.50

ORA-332
93.7
−2.75
0.62
0.552
82.99

ORA-333
94.5
−2.19
0.53
0.546
85.24

ORA-334
93.9
−3.05
0.33
0.534
82.84

ORA-335
93.7
−2.77
−0.43
0.53
83.12

ORA-336
94
−2.49
0.13
0.534
84.29

ORA-337
94.1
−2.33
1.16
0.545
84.11

ORA-338
93.4
−3.17
1.18
0.544
81.64

ORA-339
93.2
−2.76
0.74
0.54
81.94

ORA-340
93.3
−2.73
1.3
0.549
82.49

ORA-341
84.8
−9.28
1.57
2.083
62.39

ORA-341
96.8
−0.01
0.19
1.331
91.81

ORA-343
96.8
−0.02
0.2
1.332
91.81

ORA-344
96.9
−0.01
0.18
1.329
92.01

ORA-345
96.9
0
0.18
1.331
92.03

ORA-346
93.6
−2.4
0.58
0.515
83.13

ORA-347
93.3
−2.39
0.5
0.506
82.66

ORA-348
93.8
−2.11
0.77
0.477
83.67

ORA-349
93.8
−2.08
0.73
0.476
83.61

ORA-350
93.8
−2.14
0.72
0.471
83.22

ORA-351
93.6
−2.09
1.01
0.479
82.66

ORA-352
93.8
−2.19
0.91
0.499
83.75

ORA-353
94.3
−1.78
1.01
0.433
85.13

ORA-354
94.4
−1.79
0.92
0.444
85.42

It will be apparent to those skilled in the art that various modifications and variations may be made to the embodiments described herein without departing from the spirit and scope of the claimed subject matter. Thus, it is intended that the specification cover the modifications and variations of the various embodiments described herein provided such modification and variations come within the scope of the appended claims and their equivalents.

Number	Name	Date	Kind
2418605	Shepherd et al.	Apr 1947	A
3524737	Doyle et al.	Aug 1970	A
3751238	Grego et al.	Aug 1973	A
3778335	Boyd	Dec 1973	A
3788865	Busdiecker et al.	Jan 1974	A
3902881	Pirooz	Sep 1975	A
4102664	Dumbaugh, Jr.	Jul 1978	A
4240836	Borrelli et al.	Dec 1980	A
4298389	Johnson et al.	Nov 1981	A
4786305	Ball et al.	Nov 1988	A
4814297	Beall et al.	Mar 1989	A
6333286	Kurachi et al.	Dec 2001	B1
6340647	Koyama et al.	Jan 2002	B1
6365534	Koyama et al.	Apr 2002	B1
6376403	Koyama et al.	Apr 2002	B1
6532770	Uhlik et al.	Mar 2003	B2
6547980	Kurachi et al.	Apr 2003	B1
7192898	Mori et al.	Mar 2007	B2
7659221	Arbab et al.	Feb 2010	B2
7666511	Ellison et al.	Feb 2010	B2
8127571	Martin et al.	Mar 2012	B2
8168313	Endo et al.	May 2012	B2
8232218	Dejneka et al.	Jul 2012	B2
8455066	Heithoff et al.	Jun 2013	B2
8962503	Nagai et al.	Feb 2015	B2
9053734	Kajita et al.	Jun 2015	B2
9156725	Dejneka et al.	Oct 2015	B2
9199876	Wang et al.	Dec 2015	B2
9284215	Yamamoto et al.	Mar 2016	B2
9403716	Dejneka et al.	Aug 2016	B2
9595960	Wilford	Mar 2017	B2
9701570	Mauro et al.	Jul 2017	B2
9790124	Dejneka et al.	Oct 2017	B2
9963378	Yamamoto	May 2018	B2
10081568	Plevacova et al.	Sep 2018	B2
10246371	Dejneka et al.	Apr 2019	B1
10577275	Lambricht et al.	Mar 2020	B2
10626043	Lambricht et al.	Apr 2020	B2
10656454	Bazemore et al.	May 2020	B2
11059739	Wolfinger et al.	Jul 2021	B2
11072557	Weiss et al.	Jul 2021	B2
11161768	Lambricht et al.	Nov 2021	B2
11192817	Ono	Dec 2021	B2
11267748	Siebers et al.	Mar 2022	B2
11390560	Murayama et al.	Jul 2022	B2
11420898	He et al.	Aug 2022	B2
20030210535	Gaides	Nov 2003	A1
20070158317	Brix et al.	Jul 2007	A1
20130128434	Yamamoto et al.	May 2013	A1
20130136909	Mauro et al.	May 2013	A1
20140066285	Beall et al.	Mar 2014	A1
20140087194	Dejneka et al.	Mar 2014	A1
20140243183	Beall et al.	Aug 2014	A1
20140285956	Russell-Clarke et al.	Sep 2014	A1
20150064474	Dejneka et al.	Mar 2015	A1
20150166400	Yamamoto	Jun 2015	A1
20150166403	Yamamoto	Jun 2015	A1
20150368149	Guo et al.	Dec 2015	A1
20160090321	Bookbinder et al.	Mar 2016	A1
20160168023	Baum et al.	Jun 2016	A1
20160326045	Li	Nov 2016	A1
20170166478	Gross et al.	Jun 2017	A1
20170184764	Matsuyuki et al.	Jun 2017	A1
20170217825	Hasegawa et al.	Aug 2017	A1
20170291849	Dejneka et al.	Oct 2017	A1
20170305786	Roussev et al.	Oct 2017	A1
20170355636	Borrelli et al.	Dec 2017	A1
20180148370	Baker et al.	May 2018	A1
20180162768	Boek et al.	Jun 2018	A1
20180362390	Claireaux et al.	Dec 2018	A1
20190071345	Mauro	Mar 2019	A1
20190177206	Dejneka et al.	Jun 2019	A1
20190263713	Murayama et al.	Aug 2019	A1
20190300422	Guo et al.	Oct 2019	A1
20200140322	Comte et al.	May 2020	A1
20200189962	Dejneka et al.	Jun 2020	A1
20200377404	Beall et al.	Dec 2020	A1
20210155530	Cui et al.	May 2021	A1
20210155531	Dejneka et al.	May 2021	A1
20220135466	Maeda et al.	May 2022	A1
20220371942	Ping et al.	Nov 2022	A1
20230056403	Nguyen et al.	Feb 2023	A1

Number	Date	Country
107935410	Apr 2018	CN
108715510	Oct 2018	CN
109970362	Jul 2019	CN
110216384	Sep 2019	CN
110255896	Sep 2019	CN
113845302	Dec 2021	CN
10141666	Mar 2003	DE
1593658	Nov 2005	EP
2764320	Aug 2014	EP
3390311	Aug 2019	EP
1124001	Aug 1968	GB
55-045501	Mar 1980	JP
63-166736	Jul 1988	JP
2000-203872	Jul 2000	JP
2003-306348	Oct 2003	JP
4192232	Dec 2008	JP
7136100	Sep 2022	JP
2645687	Feb 2018	RU
2013099994	Jul 2013	WO
2017218468	Dec 2017	WO
2019064280	Apr 2019	WO
2019083937	May 2019	WO
2019127818	Jul 2019	WO

Number	Date	Country
63304807	Jan 2022	US
63286316	Dec 2021	US
63251785	Oct 2021	US
63212191	Jun 2021	US
63212179	Jun 2021	US

Colored glass articles having improved mechanical durability

Information

Patent Number

Date Filed

Date Issued

Inventors

Original Assignees

Examiners

Agents

CPC

Field of Search

CPC

International Classifications

Abstract

Description

Claims

CROSS REFERENCE TO RELATED APPLICATIONS

US Referenced Citations (82)

Foreign Referenced Citations (23)

Non-Patent Literature Citations (19)

Related Publications (1)

Provisional Applications (5)