FIG. 1 is a photographic showing of a cast stone with a small square face; FIG. 2 is a photographic showing of a cast stone with a rectangular face; FIG. 3 is photographic showing of a cast stone having a rectangular face whose width is one half its length; and, FIG. 4 is photographic showing of a cast stone having a relatively large square face. The broken lines in the Figures are for illustration purposes only and form no part of the claimed design.