Dioptase Crystal on Matrix – NKO 004

Description:  A single dioptase crystal (11 x 05 mm) on quartz matrix. The crystal has some minute nicks and a bad pressure mark to the back of it.

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

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

Location:  Kaokoland, Northern Namibia.

Specimen Code:  NKO 004

US $ 55

.

.