Dioptase on Quartz – NKO 019

Measurements:  69 x 51 x 46 mm

Description:  Gem quality dioptase crystals, the three largest being two of 13 mm long, and one of 11 mm, on a matrix of quartz. 

Some of the lesser crystals are damaged, and a few have broken off, but the main crystals appear to be in good shape, with only a few having minute nicks.

Weight of Specimen:  177.7 g

Chemical Composition:  Cu₂+SiO₂(OH)₂  (dioptase)
                                       SiO₂  (quartz)  

Hardness on Mohs Scale:  (dioptase)  5
                                          (quartz)  7 

Location:  Kaokoland, Northern Namibia.

Specimen Code:  NKO 019

US $ 170 

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