Dioptase on Quartz – NKO 019

Gem quality dioptase crystals on a matrix of quartz - Kaokoland

 

Measurements:  64 x 51 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.

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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