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Prismatic quartz crystals with micro dioptase inclusions.

Dioptase | ‪#‎Geology‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬

Formula: CuSiO3 • H2O
System: Trigonal
Colour: Emerald Green, blue-green
Lustre: Vitreous
Hardness: 5

From: Kaokoveld, Kunene, Namibia

Credit: KeysMinerals

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