Measurements: 35 x 26 x 10 mm
Description: Dioptase and calcite crystals on rock matrix. The specimen has a few nicks.
we purchased the specimen, it already had a blob of prestik on its
bottom, that a previous owner obviously used for mounting it. We removed as much as we could, but there is still an area of about 13 x 9 mm that obviously has prestik on it.
Weight of Specimen: 8.9 g
Chemical Composition: Cu2+SiO2(OH)2 (dioptase) CaCO3 (calcite)
Hardness on Mohs
Location: Tsumeb, Northern Namibia.
Specimen Code: NTS 007
US $ 35.