gemstone
Amethyst
Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, purple to violet color, vitreous luster, trigonal crystal system, and conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, purple to violet color, vitreous luster, trigonal crystal system, and conchoidal fracture.
Formation & geological history
Forms in hydrothermal veins and gas cavities within volcanic rocks as trace iron impurities are irradiated.
Uses & applications
Widely used in jewelry, ornamental carvings, and as a popular mineral specimen for collectors.
Geological facts
Ancient Greeks believed amethyst prevented intoxication, deriving its name from the Greek word amethystos.
Field identification & locations
Identified by its distinctive purple color and lack of cleavage; commonly sourced from Brazil, Uruguay, and Zambia.
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