Quartz Crystal with Light Smoky Colouring - SWCV 018

Quartz crystal with light smoky colouring

Measurements:  60 x 23 x 22 mm

Description:  A quartz crystal with light smoky colouring and fairly good clarity. There are a few internal flaws, one of which gives rise to a small rainbow, seen when tilted in light. 

At the lower end of the crystal is a ridge (can be mistaken for a crack at a quick glance) where the one part of the facet is elevated slightly above the other part (image 2nd from top, right).

The termination ridge has only a few minute nicks, and there are two pressure marks in the top half of the crystal. The lower half has several prominent pressure marks, and a few nicks.

Weight of Specimen:  40.0 g

Chemical Composition:  SiO2  

Hardness on Mohs Scale:  7 

Location:  Vredendal Quarry, Western Cape, South Africa.

Specimen Code:  SWCV 018

US $ 25

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