gemstone
Amethyst
Quartz (Silicon Dioxide, SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, purple to violet color, 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 to violet color, vitreous luster, trigonal crystal system, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Forms primarily as primary mineral in hydrothermal veins and gas cavities within basaltic volcanic rocks, often over millions of years.
Uses & applications
Widely used in fine jewelry, ornamental carvings, spiritual items, and mineral specimen collecting.
Geological facts
Amethyst was once as valuable as a diamond until massive deposits were discovered in Brazil during the 19th century.
Field identification & locations
Identified by its distinctive purple coloration and quartz hardness; commonly found in Brazil, Uruguay, Zambia, and the United States.
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