Dioptase

Dioptase
Dioptaas, Dioptaasi, Dioptas, Dioptasa, Dioptasio, Dioptaz, Диоптаз

Commonly known rarer (so called collectors stones) very rare (rarities) relatively rare organic material

Formula: Cu₆[Si₆O₁₈].6H₂O
Mineral class: silicates
Crystal system: trigonal
Mohs scale: 5
Density (g/cm³): 3.28 - 3.35
Cleavage: perfect
Colors: green
Luster: vitreous
Fluorescence: -
Pleochroism: slightly greenish
Largest Dioptase: 5 cm (Tsumeb Mine / Namibia)
Deposits: Chile, Namibia, Russia, USA, Zaire
1st Description: 1892

Dioptase Mineral

Origin: Tsumeb Mine / Tsumeb / Namibia

Photo by kind permission of © www.exceptionalminerals.com, Kevin Ward.

Dioptase

Weight: 0.18 ct

Origin: Tsumeb / Namibia

Photo by kind permission of © www.irocks.com, Dr. Robert Lavinsky.