gemstone
Amethyst Cluster Pendant
Silicon Dioxide (SiO2) - Quartz variety Amethyst
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, purple to violet color due to iron impurities and natural irradiation, vitreous luster, hexagonal 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 due to iron impurities and natural irradiation, vitreous luster, hexagonal crystal system, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Formed within gas cavities (vesicles) in basaltic or other volcanic rocks, or within hydrothermal veins, where silica-rich solutions cool and precipitate quartz crystals over millions of years.
Uses & applications
Used in jewelry, decorative items, and crystal healing.
Geological facts
Amethyst was once considered one of the cardinal gemstones of high value until large deposits were discovered in Brazil. Its purple color historically associated it with royalty.
Field identification & locations
Easily identified by its distinct purple coloration, crystal points, and quartz hardness. Frequently found in Brazil, Uruguay, and various localities in the United States.
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