Amethyst
Amethyst is a member of the Quartz family with a trigonal crystal system and a hardness of 7. Its color, which varies from pale to deep purple, is derived from the combination of trace amounts of iron and aluminum, plus natural or applied irradiation. Amethyst crystals and gem rough are found in num-erous locations throughout the world including Brazil, Bolivia, Mexico, Africa, Canada, Russia, the USA and Europe.
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