Dioptase
Tsumeb Mine (Tsumcorp Mine)
Tsumeb, Oshikoto Region (Otjikoto Region)
Namibia

Even the most novice of mineral collector will associate Dioptase with the Tsumeb Mine, in Namibia. The captivating species, which is essentially its "own" unique color, has been a "gateway" mineral to convert many an enthusiast into a bona fide collector. This plate is completely covered with nice sized crystals of the Copper cyclosilicate mineral and exhibits incredible luster. The numerous faces all sparkle from each, and every, direction. This is simply an outstanding mineral from a classic locality that is no longer active.
Overall Measurements: 3.94 x 2.35 x 0.97 inches (10.01 x 5.98 x 2.47 cm)

[Scale: 1 inch, with mark at 1 cm]