Amethyst (Faceted)

Physical Properties

Hardness: 7 (Mohs scale), Color: Purple to Violet, Luster: Vitreous, Crystal Structure: Trigonal/Hexagonal, Cleavage: None/Conchoidal fracture, Specific Gravity: 2.65

Formation & Geological History

Formed in hydrothermal veins and basaltic geodes. The purple color comes from irradiation, iron impurities, and the presence of trace elements. Age varies by deposit, ranging from millions to hundreds of millions of years old.

Uses & Applications

Predominantly used as a gemstone in jewelry (rings, necklaces, earrings) and as decorative specimens for collectors or metaphysical uses.

Geological Facts

Amethyst was considered a precious stone on par with Diamond until the 19th century, when large deposits were found in Brazil. Its name comes from the Ancient Greek 'amethystos', meaning 'not intoxicated'.

Field Identification & Locations

Identify in the field by its hexagonal crystal habit and purple hue. Found globally, with major deposits in Brazil, Uruguay, Zambia, and South Korea. Collectors should look for 'deep Siberian' color (rich purple with red/blue flashes).

Identified on: 4/26/2026

Mode: Standard