mineral

Amethyst (Polished/Carved Crystal)

Silicon Dioxide (SiO2) with trace Iron (Fe)

Hardness: 7 on Mohs scale; Color: Pale lavender to deep violet; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: Indistinct; Specific Gravity: 2.65.

Hardness: 7 on Mohs scale
Color: Pale lavender to deep violet
Luster: Vitreous (glassy)

Identified May 19, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Pale lavender to deep violet; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: Indistinct; Specific Gravity: 2.65.

Formation & geological history

Formed in igneous or metamorphic environments when silica-rich fluid crystallizes in gas pockets (vugs) or cavities. The purple color is caused by natural irradiation of trace iron minerals within the quartz structure.

Uses & applications

Commonly used in jewelry, lapidary arts for decorative carvings, and as a popular focus for mineral collectors and practitioners of holistic healing.

Geological facts

Amethyst was once considered a 'Cardial Gem' and was as valuable as diamond or ruby until large deposits were discovered in Brazil in the 19th century. Its name comes from the Greek 'amethystos', meaning 'not intoxicated'.

Field identification & locations

Identify in the field by its hexagonal crystal habit, lack of cleavage, and purple color zoning. Commonly found in Brazil, Uruguay, Zambia, and Ontario.

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