Amethyst Quartz Crystal Group with Calcite, on Basalt Matrix – NBB 046

Amethyst quartz crystal group with calcite, on matrix

Measurements:  77 x 67 x 58 mm 

Description:  A group of amethyst quartz crystals (of which some double terminated) with interesting growth patterns, sits on a basalt matrix, partly covered with minute (?)calcite crystals. 

The quartz crystal group has one nick of about 6 mm long on one of the smaller crystals, and another small crystal has a very minute nick (hardly visible with the naked eye) to its termination tip. The calcite crystals have nicks to the edges of the specimen. 

This is a beautiful specimen that displays well on a flat surface in more than one position. The matrix has been trimmed on three sides, to display better.

Weight of Specimen:  362.8 g

Chemical Composition:  SiO2  (quartz) 
                                       CaCO3  (calcite) 

Hardness on Mohs Scale:  (quartz)  7 
                                          (calcite)  3        

Location:  Brandberg, Namibia.

Specimen Code:  NBB 046

US $ 650

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