gemstone
Amethyst
Quartz (Silicon Dioxide, SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, purple to violet color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, purple to violet color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.
Formation & geological history
Forms primarily within gas cavities in volcanic rocks through hydrothermal processes involving silica-rich fluids and iron impurities exposed to natural irradiation.
Uses & applications
Widely utilized in fine jewelry, ornamental carvings, spiritual healing, and mineral collections.
Geological facts
Ancient Greeks believed amethyst prevented intoxication, deriving its name from the Greek word amethystos, meaning not intoxicated.
Field identification & locations
Identified by its distinct purple coloration and quartz hardness; commonly sourced from Brazil, Uruguay, and Zambia.
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