gemstone

Amethyst bead bracelet

Amethyst, purple quartz (SiO₂)

AI-generated identification · may be incorrect

Quartz has Mohs hardness 7, vitreous luster, hexagonal crystal structure, and no cleavage; purple color comes mainly from iron impurities and irradiation. The beads are polished and likely lightly treated or grade-sorted.

Identified August 29, 2026More gemstone →

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Physical properties

Formation & geological history

Amethyst forms in silica-rich hydrothermal fluids, commonly lining volcanic geodes and cavities, especially in basalt; deposits range from ancient to relatively young. Major sources include Brazil, Uruguay, Zambia, and Bolivia.

Uses & applications

Used extensively in jewelry, ornamental carvings, and mineral collecting. This bracelet is a human-processed geological specimen rather than a naturally occurring rock mass.

Geological facts

Color ranges from pale lilac to deep violet; heating can produce yellow citrine or green prasiolite. Amethyst is February’s birthstone and was historically believed to prevent intoxication.

Field identification & locations

Identify genuine amethyst by its glassy luster, hardness, internal color zoning, and natural inclusions; glass and dyed quartz may show bubbles or concentrated color in fractures. Individual beads cannot be reliably authenticated without testing.