Measurements: 71 x 59 x 46 mm
Description: A double terminated quartz crystal with a faint smoky colouring.
The centre of the crystal has white clouds, probably caused by thousands of minute air bubbles. One of the termination facets has very interesting growth patterns (image bottom right), and there is a large elevation on one of the others.
The specimen has quite a few (mostly small) nicks and a large internal flaw.
Weight of Specimen: 193.8 g
Chemical Composition: SiO2
Hardness on Mohs Scale: 7
Location: Northern Cape, South Africa.
Specimen Code: BARG 054
US $ 38