mineral
Amethyst
Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, purple color caused by iron impurities and irradiation, vitreous luster, trigonal crystal system, conchoidal fracture, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, purple color caused by iron impurities and irradiation, vitreous luster, trigonal crystal system, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Forms in hydrothermal veins and gas cavities within volcanic rocks as silica-rich fluids cool and crystallize over millions of years.
Uses & applications
Widely used in jewelry, ornamental carvings, spiritual healing, and crystal collecting.
Geological facts
Ancient Greeks believed amethyst prevented intoxication, deriving its name from the Greek word 'amethustos', meaning not intoxicated.
Field identification & locations
Identified by its distinctive purple coloration and high hardness; commonly sourced from Brazil, Uruguay, Zambia, and the United States.
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