Quartz Crystals on (?)Chalcedony MatrixNBB 069

Two quartz crystals, the biggest with inclusions, on matrix





Measurements:  90 x 65 x 56 mm

Description:  Two quartz crystals, the largest (45 x 15 x 15 mm) with a very faint amethyst colouring, gas inclusions and a few small moving bubbles, sit on an unknown matrix (possibly chalcedony) which, in turn, sits on a thin basalt matrix. The (?)chalcedony has a thin, black coating of a mineral unknown to us. 

The matrix has been trimmed on two sides, and the specimen displays well on a flat surface. Neither of the crystals have any notable damage.

Weight of Specimens:  171.8 g

Chemical Composition:  SiO2

Hardness on Mohs Scale:  7  

Location:  Brandberg, Namibia.

Specimen Code:  NBB 069

US $ 120 






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