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Dioptase on Dolomite

#BN49983
SOLD
Dioptase from Tsumeb mine, Tsumeb, Namibia - BN49983
Dioptase from Tsumeb mine, Tsumeb, Namibia - BN49983

Dioptase on Dolomite

#BN49983
Availability
Sold
Size
2.2 x 2.3 x 1.5 cm - Thumbnail 
Formula
CuSiO3·H2O (RRUFF)
Locality
Tsumeb mine, Tsumeb, Namibia

This is a real gem of a specimen. The green in the photos does not show the luster nor the emerald green gemmy color very well.

Dioptase

Formula
CuSiO3·H2O 
Crystal System
Trigonal 
Crystal Habit
Massive, Cryptocrystalline, Crystalline - Coarse 
Cleavage
Good, None, None 
Luster
Vitreous (Glassy) 
Color
dark blue green, emerald green, turquoise 
Streak
green 
Class
Trigonal - Rhombohedral 
Fracture
Conchoidal 
Hardness
5 

Data courtesy of Webmineral.

Collection
Dr. Buford Nichols Collection
Mineralpedia
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