
mineral
Chevron Amethyst
Silicon Dioxide (SiO2) with iron impurities
Hardness: 7 on Mohs scale. Color: Alternating bands of purple amethyst and white/grey quartz. Luster: Vitreous (glassy). Crystal Structure: Hexagonal (trigonal). Cleavage: None (conchoidal fracture). Specific Gravity: 2.65.
- Hardness
- 7 on Mohs scale
- Color
- Alternating bands of purple amethyst and white/grey quartz
- Luster
- Vitreous (glassy)
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Physical properties
Hardness: 7 on Mohs scale. Color: Alternating bands of purple amethyst and white/grey quartz. Luster: Vitreous (glassy). Crystal Structure: Hexagonal (trigonal). Cleavage: None (conchoidal fracture). Specific Gravity: 2.65.
Formation & geological history
Formed in hydrothermal veins or cavities within igneous rocks (primarily basalt). The 'Chevron' pattern occurs through alternating periods of crystal growth between amethyst and milky quartz, often occurring in various geological eras from Precambrian to the present.
Uses & applications
Predominantly used for jewelry (beads, cabochons), metaphysical products, decorative carvings, and as a popular specimen for mineral collectors.
Geological facts
Chevron Amethyst, also known as 'Banded Amethyst' or 'Dogtooth Amethyst', is a combination of amethyst and white quartz that forms a 'V' shaped pattern. It is considered one of the strongest 'Third Eye' stones in metaphysical traditions.
Field identification & locations
Identify in the field by its distinct purple and white V-shaped banding and its ability to scratch glass (hardness 7). Major sources include Brazil, Uruguay, Namibia, and India. It is often found in geodes or large rock masses.
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