The present disclosure relates to gemstones, more specifically, the present disclosure relates to a pattern of facets of gemstones.
Some gemstones are designed/cut to produce a desirable amount of brilliance, or “sparkle” by forming or cutting a number of individual facets on the exterior surface of the gemstone. Other gemstones are designed/cut to enhance a natural color (e.g., yellow, pink, etc.) of the gemstone. However, it can be difficult to produce a gemstone having a layout of facets at specific angles that produce both a desirable amount of brilliance and also enhance the natural color of the gemstone.
The present disclosure is directed to solving these problems and addressing other needs.
According to some implementations of the present disclosure, the gemstone includes a crown forming an upper portion of the gemstone. The surface of the crown includes a table, a plurality of star facets, a plurality of upper main crown facets, a plurality of upper intermediate crown facets, a plurality of lower main crown facets, a plurality of lower intermediate crown facets, and a plurality of upper girdle facets. The table forms a generally horizontal upper surface of the crown. Each of the plurality of star facets is disposed adjacent to and abutting the table. Each of the plurality of upper main crown facets is disposed between two of the plurality of star facets. Each of the plurality of upper intermediate crown facets is disposed between two of the plurality of upper main crown facets. Each of the plurality of lower main crown facets is disposed adjacent to and abutting one of the plurality of upper intermediate crown facets Each of the plurality of lower intermediate crown facets is disposed adjacent to and abutting one of the plurality of upper main crown facets and disposed between two of the plurality of lower main crown facets. The plurality of upper girdle facets is formed in pairs of adjacent upper girdle facets. Each pair of the adjacent upper girdle facets is disposed between two of the plurality of lower main crown facets. The gemstone further includes a pavilion forming a lower portion of the gemstone. A surface of the pavilion includes a plurality of culet-adjacent facets, a plurality of lower main pavilion facets, a plurality of lower candle facets, a plurality of upper main pavilion facets, a plurality of upper candle facets, and a plurality of lower girdle facets. The plurality of culet-adjacent facets forms a lower point of the pavilion. Each of the plurality of lower main pavilion facets is disposed adjacent to and abutting an edge of one of the plurality of culet-adjacent facets. An upper portion of each of the plurality of lower candle facets is disposed generally between two of the plurality of lower main pavilion facets and a lower portion of each of the plurality of lower candle facets is disposed generally between two of the plurality of culet-adjacent facets. Each of the plurality of upper main pavilion facets is disposed adjacent to and abutting an edge of one of the plurality of lower main pavilion facets. Each of the plurality of upper candle facets is disposed adjacent to and abutting an edge of one of the plurality of lower candle facets. A lower portion of each of the plurality of upper candle facets is disposed generally between two of the plurality of upper main pavilion facets. The plurality of lower girdle facets is formed in pairs of adjacent lower girdle facets. Each of the pairs of adjacent lower girdle facets is disposed generally between two of the plurality of upper main pavilion facets. Each of the pairs of adjacent lower girdle facets has an upper portion of a respective one of the plurality of upper candle facets disposed generally therebetween. The gemstone further includes a girdle positioned between the crown and the pavilion and encircling the gemstone. Each of the plurality of upper girdle facets is disposed adjacent to and abutting an upper edge of the girdle. Each of the plurality of lower girdle facets is disposed adjacent to and abutting a lower edge of the girdle.
According to some implementations of the present disclosure, the gemstone includes a crown forming an upper portion of the gemstone. The surface of the crown includes a table, a plurality of star facets, a plurality of upper main crown facets, a plurality of upper intermediate crown facets, a plurality of lower main crown facets, a plurality of lower intermediate crown facets, and a plurality of upper girdle facets. The table forms a generally horizontal upper surface of the crown. Each of the plurality of star facets is disposed adjacent to and abutting the table. Each of the plurality of upper main crown facets is disposed between two of the plurality of star facets. Each of the plurality of upper intermediate crown facets is disposed between two of the plurality of upper main crown facets. Each of the plurality of lower main crown facets is disposed adjacent to and abutting one of the plurality of upper intermediate crown facets Each of the plurality of lower intermediate crown facets is disposed adjacent to and abutting one of the plurality of upper main crown facets and disposed between two of the plurality of lower main crown facets. The plurality of upper girdle facets is formed in pairs of adjacent upper girdle facets. Each pair of the adjacent upper girdle facets is disposed between two of the plurality of lower main crown facets.
According to some implementations of the present disclosure, the gemstone includes a pavilion forming a lower portion of the gemstone. A surface of the pavilion includes a plurality of culet-adjacent facets, a plurality of lower main pavilion facets, a plurality of lower candle facets, a plurality of upper main pavilion facets, a plurality of upper candle facets, and a plurality of lower girdle facets. The plurality of culet-adjacent facets forms a lower point of the pavilion. Each of the plurality of lower main pavilion facets is disposed adjacent to and abutting an edge of one of the plurality of culet-adjacent facets. An upper portion of each of the plurality of lower candle facets is disposed generally between two of the plurality of lower main pavilion facets and a lower portion of each of the plurality of lower candle facets is disposed generally between two of the plurality of culet-adjacent facets. Each of the plurality of upper main pavilion facets is disposed adjacent to and abutting an edge of one of the plurality of lower main pavilion facets. Each of the plurality of upper candle facets is disposed adjacent to and abutting an edge of one of the plurality of lower candle facets. A lower portion of each of the plurality of upper candle facets is disposed generally between two of the plurality of upper main pavilion facets. The plurality of lower girdle facets is formed in pairs of adjacent lower girdle facets. Each of the pairs of adjacent lower girdle facets is disposed generally between two of the plurality of upper main pavilion facets. Each of the pairs of adjacent lower girdle facets has an upper portion of a respective one of the plurality of upper candle facets disposed generally therebetween.
According to some implementations of the present disclosure, the gemstone includes a crown forming an upper portion of the gemstone. The surface of the crown includes a table having a generally octagonal shape, a plurality of star facets having a generally triangular shape, a plurality of upper main crown facets having a generally pentagonal shape, a plurality of upper intermediate crown facets having a generally triangular shape, a plurality of lower main crown facets having a generally pentagonal shape, a plurality of lower intermediate crown facets having a generally triangular shape, and a plurality of upper girdle facets having a generally triangular shape. The table forms a generally horizontal upper surface of the crown. Each of the plurality of star facets is disposed adjacent to and abutting the table. Each of the plurality of upper main crown facets is disposed between two of the plurality of star facets. Each of the plurality of upper intermediate crown facets is disposed between two of the plurality of upper main crown facets. Each of the plurality of lower main crown facets is disposed adjacent to and abutting one of the plurality of upper intermediate crown facets Each of the plurality of lower intermediate crown facets is disposed adjacent to and abutting one of the plurality of upper main crown facets and disposed between two of the plurality of lower main crown facets. The plurality of upper girdle facets is formed in pairs of adjacent upper girdle facets. Each pair of the adjacent upper girdle facets is disposed between two of the plurality of lower main crown facets. The gemstone further includes a pavilion forming a lower portion of the gemstone. A surface of the pavilion includes a plurality of culet-adjacent facets forming a lower point of the pavilion and having a generally pentagonal shape with a flat edge opposing the lower point of the pavilion, a plurality of lower main pavilion facets having a generally trapezoidal shape, a plurality of lower candle facets having a generally pentagonal shape, a plurality of upper main pavilion facets having a generally pentagonal shape, a plurality of upper candle facets having a generally pentagonal shape, and a plurality of lower girdle facets having four edges. Each of the plurality of lower main pavilion facets is disposed adjacent to and abutting an edge of one of the plurality of culet-adjacent facets. An upper portion of each of the plurality of lower candle facets is disposed generally between two of the plurality of lower main pavilion facets and a lower portion of each of the plurality of lower candle facets is disposed generally between two of the plurality of culet-adjacent facets. Each of the plurality of upper main pavilion facets is disposed adjacent to and abutting an edge of one of the plurality of lower main pavilion facets. Each of the plurality of upper candle facets is disposed adjacent to and abutting an edge of one of the plurality of lower candle facets. A lower portion of each of the plurality of upper candle facets is disposed generally between two of the plurality of upper main pavilion facets. The plurality of lower girdle facets is formed in pairs of adjacent lower girdle facets. Each of the pairs of adjacent lower girdle facets is disposed generally between two of the plurality of upper main pavilion facets. Each of the pairs of adjacent lower girdle facets has an upper portion of a respective one of the plurality of upper candle facets disposed generally therebetween. The gemstone further includes a girdle positioned between the crown and the pavilion and encircling the gemstone. Each of the plurality of upper girdle facets is disposed adjacent to and abutting an upper edge of the girdle. Each of the plurality of lower girdle facets is disposed adjacent to and abutting a lower edge of the girdle.
According to some implementations of the present disclosure, the gemstone includes a crown forming an upper portion of the gemstone, a pavilion forming a lower portion of the gemstone, and a girdle positioned between the crown and the pavilion and encircling the gemstone. The gemstone has a top depth percentage of between about 25% and about 35%, and a bottom depth percentage of between about 50% and about 60%.
According to some implementations of the present disclosure, the gemstone includes a crown forming an upper portion of the gemstone, a pavilion forming a lower portion of the gemstone, and a girdle positioned between the crown and the pavilion and encircling the gemstone. The gemstone has a total depth percentage of between about 86% and about 91%.
According to some implementations of the present disclosure, the gemstone includes a crown forming an upper portion of the gemstone, and a pavilion forming a lower portion of the gemstone. A surface of the crown includes a first plurality of facets, and a surface of the pavilion includes a second plurality of facets. Each facet in the first plurality of facets being disposed at an angle of between about 22° and about 55.5° relative to an upper surface of the gemstone. Each facet in the second plurality of facets being disposed at an angle of between about 38.5° and about 60° relative to the upper surface of the gemstone.
The foregoing and additional aspects and implementations of the present disclosure will be apparent to those of ordinary skill in the art in view of the detailed description of various embodiments and/or implementations, which is made with reference to the drawings, a brief description of which is provided next.
The foregoing and other advantages of the present disclosure will become apparent upon reading the following detailed description and upon reference to the drawings.
While the present disclosure is susceptible to various modifications and alternative forms, specific implementations and embodiments have been shown by way of example in the drawings and will be described in detail herein. It should be understood, however, that the present disclosure is not intended to be limited to the particular forms disclosed. Rather, the present disclosure is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
Referring to
The dimensional characteristics of the gemstone 1 are based off of the width of the gemstone 1. The width of the gemstone 1 can also be expressed as the diameter of the girdle 50. The gemstone 1 has a table percentage that is a measure of a width or diameter of the table of the gemstone 1. The table can be formed in a variety of shapes, as thus the measure of the width of the table can vary. In an embodiment, the table is a circle, and thus the diameter of the circle is used to express the table percentage of the gemstone 1. In another embodiment, the table is an octagon, and either the distance between opposing edges of the octagon or between opposing vertices of the octagon is used to express the table percentage. The table percentage is generally expressed as the width of the table 1 divided by the width of the gemstone 1. In an embodiment, the table percentage is between about 33% and about 36%. In a further embodiment, the table percentage is between about 30% and about 36%. In an additional embodiment, the table percentage is between about 21% and about 40%.
The gemstone 1 has a top depth percentage that is a measure of the height of the crown 10 of the gemstone 1. The top depth percentage is generally expressed as the height of the crown 10 divided by the width of the gemstone 1. In an embodiment, the top depth percentage is between about 27% and about 31%. In another embodiment, the top depth percentage is between about 25% and about 35%.
The gemstone 1 has a bottom depth percentage that is a measure of the total height of the pavilion 30 of the gemstone 1. The bottom depth percentage is generally expressed as the height of the pavilion 30 divided by the width of the gemstone 1. In an embodiment, the bottom depth percentage is between about 53% and about 56%. In another embodiment, the bottom depth percentage is between about 50% and about 60%.
The gemstone 1 has a girdle thickness percentage that is a measure of the total height of the girdle 50 of the gemstone 1. The girdle thickness percentage is generally expressed as the height of the girdle 50 divided by the width of the gemstone 1. In an embodiment, the girdle thickness percentage is between about 4.5% and about 6%. In another embodiment, the girdle thickness percentage is between about 3% and about 8%. In a further embodiment, the girdle thickness percentage is between about 2% and about 10%.
The gemstone 1 has a total depth percentage that is a measure of the total height of the gemstone 1. The total depth percentage is generally expressed as the height of the gemstone 1 divided by the width of the gemstone 1. The total depth percentage may also be expressed as the sum of the top depth percentage, the bottom depth percentage, and the girdle thickness percentage. In an embodiment, the total depth percentage is between about 86% and about 90.5%. In another embodiment, the total depth percentage is between about 80% and about 95%. In further embodiment, the total depth percentage is between about 86% and about 91%.
Referring back to
The angles that each of the facets of the crown 10 are disposed at may be measured relative to a horizontal plane defined by the table of the gemstone 1 (e.g. the top surface of the gemstone 1). As shown in the upper set of axes in
In an embodiment, the angle of the star facets 14 is about 26°. In another embodiment, the angle of the star facets 14 is between about 25° and about 27°. In a further embodiment, the angle of the star facets 14 is between about 22° and about 30°.
In an embodiment, the angle of the upper main crown facets 16 is between about 32° and about 35°. In another embodiment, the angle of the upper main crown facets 16 is between about 29° and about 38°.
In an embodiment, the angle of the upper intermediate crown facets 18 is about 44°. In another embodiment, the angle of the upper intermediate crown facets 18 is between about 43° and about 45°. In a further embodiment, the angle of the upper intermediate crown facets 18 is between about 40° and about 48°.
In an embodiment, the angle of the lower main crown facets 20 is about 47°. In another embodiment, the angle of the lower main crown facets 20 is between about 46° and about 48°. In a further embodiment, the angle of the lower main crown facets 20 is between about 44° and about 50°.
In an embodiment, the angle of the lower intermediate crown facets 22 is between about 36° and about 39°. In another embodiment, the angle of the lower intermediate crown facets 22 is between about 34° and about 41°.
In an embodiment, the angle of the upper girdle facets 24 is about 52°. In a further embodiment, the angle of the upper girdle facets 24 is between about 51° and about 53°. In a further embodiment, the angle of the upper girdle facets 24 is between about 53.5° and about 55.5°. In yet another embodiment, the angle of the upper girdle facets 24 is between about 49° and about 55°.
The angles that each of the facets of the pavilion 30 are disposed at may also be measured relative to the horizontal plane defined by the table of the gemstone 1 (e.g. the top surface of the gemstone 1). As shown in the lower set of axes in
In an embodiment, the angle of the culet-adjacent facets 32 is about 42°. In another embodiment, the angle of the culet-adjacent facets 32 is between about 41° and about 42°. In a further embodiment, the angle of the culet-adjacent facets 32 is between about 39° and about 44°. In an even further embodiment, the angle of the culet-adjacent facets 32 is between about 40.7° and about 42.2°. In yet another embodiment, the angle of the culet-adjacent facets 32 is between about 38.5° and about 43°.
In an embodiment, the angle of the lower candle facets 34 is between about 44° and about 45°. In another embodiment, the angle of the lower candle facets 34 is between about 43° and about 46°. In a further embodiment, the angle of the lower candle facets 34 is between about 42° and about 47°. In a further embodiment, the angle of the lower candle facets 34 is between about 40° and about 50°.
In an embodiment, the angle of the lower main pavilion facets 36 is between about 45° and about 48°. In a further embodiment, the angle of the lower main pavilion facets 36 is between about 43° and about 50°.
In an embodiment, the angle of the upper candle facets 38 is between about 48° and about 51°. In another embodiment, the angle of the upper candle facets 38 is between about 46° and about 53°.
In an embodiment, the angle of the upper main pavilion facets 40 is between about 50° and about 53°. In a further embodiment, the angle of the upper main pavilion facets 40 is between about 45° and about 55°.
In an embodiment, the angle of the lower girdle facets 42 is between about 54.5° and about 57°. In another embodiment, the angle of the lower girdle facets 42 is between about 55° and about 58°. In a further embodiment, the angle of the lower girdle facets 42 is between about 50° and about 60°.
Referring now to
Eight upper main crown facets 16 are disposed between the eight star facets 14 and abutting the vertices of the table 12. Each upper main crown facet 16 has a generally pentagonal shape, and is disposed between two star facets 14. One point of each upper main crown facet 16 abuts a respective vertex of the table 12.
Eight upper intermediate crown facets 18 are disposed between the upper main crown facets 16 and abutting vertices of the star facets 14. Each upper intermediate crown facet 18 is disposed between two of the upper main crown facets 16, and has a generally triangular shape. One point of each of the upper intermediate crown facets 18 abuts a vertex of a respective one of the star facets 14. This vertex of each of the star facets 14 is generally opposite the base of each of the star facets 14 that abuts one of the edges of the table 12. An edge of each of the upper intermediate crown facets 18 opposite the vertex of the upper intermediate crown facet 18 that abuts the vertex of the star facets 14 abuts an edge of a respective one of the eight lower main crown facets 20.
Eight lower main crown facets 20 are disposed with an edge of each lower main crown facet 20 abutting an edge of a respective one of the upper intermediate crown facets 18. As shown, each lower main crown facet 20 has a generally pentagonal shape. Each lower main crown facet 20 has a first vertex that abuts a vertex of a first adjacent lower main crown facet 20, and a second vertex that abuts a second adjacent lower main crown facet 20. Each of the lower main crown facets 20 have a third vertex abutting the upper edge of the girdle. This third vertex is opposite the edge of the lower main crown facet 20 that abuts an edge of one of the upper intermediate crown facets 18.
Eight lower intermediate crown facets 22 are disposed between the lower main crown facets 20 and the upper main crown facets 16. Each lower intermediate crown facet 22 has a generally triangular shape. A first edge of each of the lower intermediate crown facets 22 abuts an edge of a respective one of the upper main crown facets 16. This edge of each of the upper main crown facets 16 is generally opposite the point of each of the upper main crown facets 16 that abuts one of the vertices of table 12. The second edge and the third edge of each lower intermediate crown facet 22 abuts an edge of the lower main crown facets 20 disposed on either side thereof.
Finally, sixteen upper girdle facets 24 are disposed between the lower main crown facets 20 and the girdle 50. Each of the upper girdle facets 24 has a generally triangular shape. A first edge of each of the upper girdle facets 24 abuts the upper edge of the girdle 50, and can be flat or curved depending on the shape of the girdle 50. As shown, two of the upper girdle facets 24 are disposed between any two of the lower main crown facets 20. A second edge of each upper girdle facet 24 abuts an edge of a single adjacent lower main crown facet 20. A third edge of each upper girdle facet 24 abuts an edge of a single adjacent upper girdle facet 24.
Referring now to
Eight lower candle facets 34 are formed on the surface of the pavilion 30 and have a generally pentagonal shape similar to that of the culet-adjacent facets 32. The lower candle facets 34 extend upward (shown as radially outward in
Eight lower main pavilion facets 36 are formed such that each lower main pavilion facet 36 is disposed between adjacent lower candle facets 34. Each of the lower main pavilion facets 36 has a generally trapezoidal shape with an upper horizontal edge, a lower horizontal edge, and two angled edges. As shown, the lower edge of each of the lower main pavilion facets 36 abuts an edge of a respective culet-adjacent facet 32 opposite the point 31. Each of the two angled edges of the lower main pavilion facets 36 abuts an edge of an adjacent lower candle facet 34.
The pavilion 30 further includes eight upper candle facets 38. Each of the plurality of upper candle facets 38 has a similar pentagonal shape as the culet-adjacent facets 32 and the lower candle facets 34. The upper candle facets 38 are generally sized smaller than the lower candle facets 34 and oriented in the opposite direction. The upper candle facets 38 have an upper point extending upwards toward the girdle 50 and a horizontal edge opposing the upper point. The upper point of each of the upper candle facets 38 does not contact the girdle 50 itself however. The upper point abuts a pair of adjacent lower girdle facets 42, and ends prior to reaching the girdle 50. The horizontal edge of each of the upper candle facets 38 abuts the horizontal edge of a respective one of the lower candle facets 34.
Eight upper main pavilion facets 40 are formed between the upper candle facets 38. Each upper main pavilion facet 40 is disposed between a pair of upper candle facets 38. The upper main pavilion facets 40 have a generally pentagonal shape with a lower horizontal edge and an upper point that extends upward and contacts the girdle 50. The lower horizontal edge of each of the upper main pavilion facets 40 abuts the upper horizontal edge of a respective one of the lower main pavilion facets 36. Two side edges of each of the upper main pavilion facets 40 abut edges of adjacent upper candle facets 38.
Finally, sixteen lower girdle facets 42 are disposed around an upper portion of the pavilion 30. Adjacent lower girdle facets 42 are generally formed in pairs of lower girdle facets 42. Each pair of adjacent lower girdle facets 42 are bounded by one of the upper candle facets 38, two of the upper main pavilion facets 40, and the girdle 50 itself. Each individual lower girdle facet 42 is bounded by one of the upper candle facets 38, one of the upper main pavilion facets 40, an adjacent lower girdle facet 42, and the girdle 50. Each of the lower girdle facets 42 generally has four edges. A first edge of each lower girdle facet 42 abuts the lower edge of the girdle 50. A second edge of each lower girdle facet 42 abuts an edge of one of the upper main pavilion facets 40. A third edge of each lower girdle facet 42 abuts an edge of one of the upper candle facets 38. A fourth edge of each lower girdle facet 42 abuts an edge of an adjacent lower girdle facet 42. As shown, the upper point of the upper candle facets 38 extends upward into a gap formed by the lower portions of adjacent lower girdle facets 42.
Referring now to
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The next step is shown in
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Referring now to
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The step is shown in
The next step, as shown in
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Thus, a gemstone having a crown, a girdle, and a pavilion are thus formed. The crown and the pavilion comprise a number of sets of interlocking facets that share edges and vertices on the surface of the gemstone. Each of the sets of interlocking facets is disposed at a specific angle. The shape of the facets, the organization of the facets, and the angles that the facets are formed at on the surface of the gemstone result in a gemstone having an improved brilliance. The brilliance refers to the amount of light that enters the gemstone, and is internally reflected such that it exits out of the crown of the gemstone. The facets according to aspects of the present disclosure increase the amount of light reflecting off of the internal surfaces of the facets, thus increasing the brilliance of the gemstone. The facets also give the gemstone a distinct golden or yellow color.
While the present disclosure has been described with reference to one or more particular embodiments, those skilled in the art will recognize that many changes may be made thereto without departing from the spirit and scope of the present disclosure. Each of these embodiments and obvious variations thereof is contemplated as falling within the spirit and scope of the present disclosure. It is also contemplated that additional embodiments according to aspects of the present disclosure may combine any number of features from any of the embodiments described herein.
This application is a U.S. National Stage of International Application No. PCT/US2019/031374, filed May 8, 2019, which claims priority to and the benefit of U.S. Provisional Patent Application No. 62/673,683, filed May 18, 2018, each of which is hereby incorporated by reference herein in its entirety.
Filing Document | Filing Date | Country | Kind |
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PCT/US2019/031374 | 5/8/2019 | WO |
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WO2019/222002 | 11/21/2019 | WO | A |
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Number | Date | Country | |
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20210219676 A1 | Jul 2021 | US |
Number | Date | Country | |
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62673683 | May 2018 | US |