mineral
Chevron Amethyst
SiO2 (Quartz with Manganese/Iron impurities)
Hardness: 7 Mohs; Color: Purple and white banding; Luster: Vitreous; Crystal Structure: Hexagonal (trigonal); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65
- Hardness
- 7 Mohs
- Color
- Purple and white banding
- Luster
- Vitreous
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Physical properties
Hardness: 7 Mohs; Color: Purple and white banding; Luster: Vitreous; Crystal Structure: Hexagonal (trigonal); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65
Formation & geological history
Formed in hydrothermal veins or volcanic geodes where alternating layers of amethyst and milky quartz grow over time due to temperature or pressure changes. Found in various geological ages.
Uses & applications
Used extensively for carvings, cabochons, metaphysical crystals, and decorative ornaments. It is also a popular beginner collector's item.
Geological facts
Also known as Banded Amethyst or Dogtooth Amethyst due to its distinct 'V' shaped patterns. It combines the strengthening properties of quartz with the stress-relieving properties associated with amethyst.
Field identification & locations
Identify by the characteristic white 'V' shaped zig-zag bands amidst purple quartz. Frequently found in large deposits in Brazil, India, and Russia. Often sold in gift shops as tumbled stones or figurines.
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Epidote
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Mineral
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