Measurements: 68 x 55 x 32 mm
Description: Amethyst quartz crystals sit on a chalcedony matrix.
The edges of the specimen are damaged, while the crystal in the centre has a few small nicks.
It displays well on a flat surface, all-round.
Weight of Specimen: 139 g
Chemical Composition: SiO2 (quartz and chalcedony)
Hardness on Mohs Scale: (quartz and chalcedony) 7
Specimen Code: OTH 036