Dioptase Crystals on  Quartz / Planchéite Matrix NBB 010

Gemmy dioptase crystals on matrix

Measurements:  35 x 27 x 20 mm

Description:  Gemmy dioptase crystals, up to 7 mm long, sit on a matrix of quartz,  planchéite and a whitish (to us, unknown) mineral.

The only apparent damage is to the edges of the specimen.

Weight of Specimen:  17.7 g

Chemical Composition:  Cu2+SiO2(OH)2  (dioptase)                                                                  Cu8Si8O22(OH)4•(H2O)  (planchéite) 
                                      SiO2  (quartz)

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

Location:  Kaokoland, Northern Namibia.

Specimen Code:  NKO 010

US $ 65

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