Name QUARTZ
Variety AMETHYST
Origin Soledade (Rio Grande do Sul) Brazil
Hardness 7
Composition SiO2
Crystaline sys. TRIGONAL
Size   18 x 13 x 8,5 cm
Weight 2.195 gr




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. This tip of amethyst belonged to a gigantic geode which, unfortunately had to be broken up to remove it form the mine. Most of the crystals were cut due to the beautiful hue, transparency and intensity of its colour.


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QUARTZ



VARIETY AMETHYST