mineral
Amethyst
Silicon dioxide (Quartz variety), SiO2
AI-generated identification · may be incorrectMohs hardness of 7, purple to violet color, vitreous luster, trigonal crystal system, and conchoidal fracture.
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Physical properties
Mohs hardness of 7, purple to violet color, vitreous luster, trigonal crystal system, and conchoidal fracture.
Formation & geological history
Forms within gas cavities in volcanic rocks through hydrothermal processes involving iron impurities and natural irradiation over millions of years.
Uses & applications
Extensively used in fine jewelry, decorative home objects like bookends, and cherished by mineral collectors.
Geological facts
Ancient Greeks believed amethyst prevented intoxication, deriving its name from the Greek word amethystos meaning sober.
Field identification & locations
Easily identified by its distinctive purple coloration and high hardness; commonly sourced from Brazil, Uruguay, and Zambia.
