mineral
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 within gas cavities in basaltic volcanic rocks or hydrothermal veins through the crystallization of silica-rich solutions exposed to natural irradiation.
Uses & applications
Widely used in high-end jewelry, decorative carvings, and as a popular mineral specimen for collectors.
Geological facts
Its purple color is caused by trace amounts of iron irradiation replacing silicon in the crystal lattice. Ancient Greeks believed it prevented intoxication.
Field identification & locations
Identified by its distinct purple coloration and hardness capable of scratching glass. Commonly sourced from Brazil, Uruguay, and Zambia.
