Measurements: 73 x 50 x 50 mm
Description: Amethyst quartz crystals sit on a chalcedony matrix.
There is damage to the edges of
the specimen, and a large contact mark. It displays well on a flat
Chemical Composition: SiO2 (quartz and chalcedony)
Hardness on Mohs Scale: (quartz and chalcedony) 7
Specimen Code: OTH 016