Measurements: 67 x 63 x 48 mm
Description: A group of three quartz crystals, fused together, together with bits of calcite, sit on a basalt rock matrix.
The group of quartz crystals, mostly clear, have only a few minute to very small nicks. The matrix has a stable flaw.
Weight of Specimen: 89.2 g
Chemical Composition: SiO2 (quartz)
Hardness on Mohs Scale: (quartz) 7
Specimen Code: NBB 146
US $ 85