Name QUARTZ
Variety AMETHYST
Origin Bolivia
Hardness 7
Composition SiO2
Crystaline sys. TRIGONAL
Size   25 x 16 x 21 cm
Weight 9.250 g




Description:
Quartz was chosen by the geologist Friedrich Mohs to represent grade 7 in his famous scale of hardness dating back to 1825, and which is still valid nowadays. Amethyst is the most valuable of the varieties of Quartz. It has been present in the jewellery of Pharaohs, Emperors and Kings for thousands of years.


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QUARTZ



VARIETY AMETHYST