Dioptase, Omaue Mine, Kaokoveld Plateau, Kunene region, Namibia

Measures: 8.5 cm tall x 7 cm wide

Dioptase, once believed to be emerald when first encountered, is amongst the most vividly colored species. Large gem crystals, such as these, are very rare and desirable. This example has one of the largest single crystals of dioptase known.