Rock Identifier
Amethyst (Quartz (Silicon Dioxide, SiO2)) — mineral
mineral

Amethyst

Quartz (Silicon Dioxide, SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale, purple to violet color, vitreous luster, trigonal crystal system, and conchoidal fracture.

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Physical properties

Hardness of 7 on the Mohs scale, purple to violet color, vitreous luster, trigonal crystal system, and conchoidal fracture.

Formation & geological history

Forms in hydrothermal veins and gas cavities in volcanic rocks through the inclusion of trace iron and natural irradiation.

Uses & applications

Widely used in jewelry, ornamental carvings, and as a popular collectible metaphysical stone.

Geological facts

Ancient Greeks believed amethyst prevented intoxication, deriving its name from the Greek word amethystos, meaning not intoxicated.

Field identification & locations

Easily identified by its distinct purple coloration and hardness, commonly sourced from Brazil, Uruguay, and Zambia.