gemstone
Chevron Amethyst
Silicon Dioxide (SiO2) with iron impurities
Hardness: 7 (Mohs scale); Color: Banded purple and white; Luster: Vitreous; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (Conchoidal fracture); Specific Gravity: 2.65
- Hardness
- 7 (Mohs scale)
- Color
- Banded purple and white
- Luster
- Vitreous
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Physical properties
Hardness: 7 (Mohs scale); Color: Banded purple and white; Luster: Vitreous; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (Conchoidal fracture); Specific Gravity: 2.65
Formation & geological history
Formed in hydrothermal veins or volcanic cavities (geodes) where layers of amethyst and milky quartz grow in alternating cycles. Features a characteristic V-shaped or 'chevron' banding pattern.
Uses & applications
Used primarily in jewelry, cabochons, carvings, and as a popular specimen for crystal collecting and metaphysical purposes.
Geological facts
Chevron amethyst is a combination of amethyst and white quartz. It is often referred to as 'Banded Amethyst' and is one of the most popular varieties of quartz due to its striking patterns.
Field identification & locations
Identify by the distinct sharp V-shaped white quartz bands contrasting with deep purple. It is found in abundance in Brazil, Uruguay, Namibia, and India.
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