
gemstone
Amethyst
Quartz (Silicon Dioxide, SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, purple to violet color, vitreous luster, and trigonal crystal system with conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, purple to violet color, vitreous luster, and trigonal crystal system with conchoidal fracture.
Formation & geological history
Forms within gas cavities in volcanic rocks through hydrothermal solutions containing iron and silica, often over millions of years.
Uses & applications
Extensively used in fine jewelry, decorative carvings, metaphysical collections, and lapidary art.
Geological facts
Amethyst was once as valuable as diamond, ruby, and emerald until large deposits were discovered in Brazil during the 19th century.
Field identification & locations
Easily identified by its distinctive purple coloration and high hardness; commonly sourced from Brazil, Uruguay, and Zambia.
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