mineral

Chevron Amethyst

Silicon Dioxide (SiO2) with iron impurities

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale; Color: Purple and white V-shaped bands; Luster: Vitreous; Crystal Structure: Hexagonal/Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Hardness: 7 on Mohs scale
Color: Purple and white V-shaped bands
Luster: Vitreous

Identified March 13, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Purple and white V-shaped bands; Luster: Vitreous; Crystal Structure: Hexagonal/Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Formation & geological history

Formed through hydrothermal processes where silica-rich fluids deposit in rock cavities (geodes or veins). The chevron pattern occurs due to alternating layers of amethyst and milky quartz. Geological ages vary greatly depending on location, from millions to hundreds of millions of years.

Uses & applications

A popular material for lapidary work, jewelry, decorative carvings, and meditative practices. Used frequently in holistic and spiritual health sectors.

Geological facts

Also known as 'Banded Amethyst' or 'Dogtooth Amethyst.' The white bands are typically milky quartz, while the purple is amethyst colored by natural irradiation of trace iron elements.

Field identification & locations

Identifiable by its distinct purple and white V-shaped (chevron) banding. Commonly found in Brazil, Uruguay, Namibia, and India. In the field, look for hexagonal prism terminations and characteristic banding in host rock veins.