070320216011
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Dioptase from Namibia.
Found at Tsumeb Mine.
Price: € 100,--
Size: 7 x 5 cm
Origin: Namibia
Formula: Cu₆Si₆O₁₈·6H₂O
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Dioptase is an intense emerald-green to bluish-green copper cyclosilicate mineral.
It is transparent to translucent. Its luster is vitreous to sub-adamantine.