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.
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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.
Formation & geological history
Forms in hydrothermal veins and gas cavities within volcanic rocks through the irradiation of iron impurities.
Uses & applications
Extensively used in fine jewelry, decorative carvings, and as a popular collector specimen.
Geological facts
Ancient Greeks believed amethyst prevented intoxication, deriving its name from the Greek word amethystos.
Field identification & locations
Identified by its distinct purple color and crystal form; commonly mined in Brazil, Uruguay, and Zambia.
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