Dioptase and Calcite on Matrix - NTS 058

Measurements:  50 x 28 x 21 mm

Description:  Dioptase and calcite crystals sit on a rock matrix. 

Only few small dioptase crystals on the edges have a few nicks. The matrix has been trimmed on two sides to display better.

Weight of Specimen:  42.4 g

Chemical Composition:  Cu₂+SiO₂(OH)₂  (dioptase)
                                       CaCO₃  (calcite)             

Hardness on Mohs Scale:  (dioptase)  5  
                                          (calcite)  3 

Location:  Tsumeb, Northern Namibia.

Specimen Code:  NTS 058

US $ 90