Rock Identifier
Chevron Amethyst (Silicon Dioxide (SiO2) with trace Iron (Fe3+)) — mineral
mineral

Chevron Amethyst

Silicon Dioxide (SiO2) with trace Iron (Fe3+)

Hardness: 7 (Mohs); Color: Purple with white 'V' shaped bands; Luster: Vitreous; Crystal Structure: Trigonal (hexagonal prisms); Cleavage: None/Conchoidal fracture; Specific gravity: 2.65

Hardness
7 (Mohs)
Color
Purple with white 'V' shaped bands
Luster
Vitreous
Identified More mineral

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Physical properties

Hardness: 7 (Mohs); Color: Purple with white 'V' shaped bands; Luster: Vitreous; Crystal Structure: Trigonal (hexagonal prisms); Cleavage: None/Conchoidal fracture; Specific gravity: 2.65

Formation & geological history

Formed in hydrothermal veins or basaltic cavities through the precipitation of silica from hot, mineral-rich fluids. The distinctive banding occurs due to fluctuations in iron content and growth rates over thousands of years.

Uses & applications

Commonly used in jewelry (beads, cabochons), metaphysical practices, and as ornamental gallery pieces or pocket stones.

Geological facts

Chevron Amethyst, also known as 'Banded Amethyst,' combines the stress-relieving properties of Amethyst with the strengthening properties of White Quartz. It is one of the few minerals named specifically for its pattern rather than just its chemical makeup.

Field identification & locations

Identify in the field by the characteristic white quartz 'V' or 'chevron' shapes against a purple background. Frequently found in Brazil, Uruguay, India, and Africa. It is a favorite for beginning collectors due to its unique aesthetics.