Dioptase, Calcite

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This is actually the type locality for dioptase; it is not Tsumeb, as some people think! At any rate; ths specimen is not notable so much for the size of its crystals as much as for the very pretty sprinkling of the crystals over the rolling, 3-dimensional matrix of calcite. The color is a nice, bright "Tsumeb" green, and the crystals, to half a cm, have good luster! 9.5 x 7 x 4.7 cm