Measurements: 32 x 24 x 17 mm Description: Small dioptase crystals sit on a trimmed calcite matrix.
The specimen has a few nicks.
Weight of Specimen: 17.6 g
Chemical Composition: Cu2+SiO2(OH)2 (dioptase)
Hardness on Mohs Scale: (dioptase) 5
Location: Tsumeb, Northern Namibia.
Specimen Code: NTS 051