Measurements: 66 x 40 x 35 mm.
Description: An impressive quartz crystal with large, deep windows. The surfaces of the termination facets are partly altered to chalcedony. The crystal has patches of amethyst and smoky colouring..
The termination has only minute nicks, while the only other damage is at the bottom of the specimen.
Weight of Specimen: 89.3 g
Chemical
Composition: SiO2 (quartz
and chalcedony)
Hardness
on Mohs Scale: (quartz
and chalcedony) 7
Location: Brandberg, Namibia.
Specimen Code: BARG 001
US $ 55
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