Measurements: 70 x 51 x 42 mm
Description: A quartz crystal with patches of amethyst and smoky colouring, and yellow iron oxide captured between layers of quartz growth.
This crystal is part of a rare find.
termination point has only a few minute nicks, while the lower parts of
the crystal has a few contact marks and nicks.
Chemical Composition: SiO2
Hardness on Mohs Scale: 7
Specimen Code: NBB 137
US $ 130