Quartz, Calcite and Prehnite Group – NBB 075

Lovely group of quartz crystals with prehnite and calcite crystals

Measurements:  72 x 42 x 20 mm

Description:  A neat group of clear quartz crystals, with a few small prehnite crystals attached to its faces, together with calcite crystals on a small basalt matrix. The main quartz crystal has a lovely diamond shaped facet.

The larger quartz crystals have only very limited damage near the matrix, while the calcite and small quartz crystals also have very little damage.

Weight of Specimen:  45.5 g

Chemical Composition:  SiO2 

Hardness on Mohs Scale:  7

Location:  Brandberg, Namibia.

Specimen Code:  NBB 075

US $ 85

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