gemstone
Chevron amethyst point
Quartz (SiO₂), purple amethyst with pale quartz bands
AI-generated identification · may be incorrectMohs hardness 7; vitreous luster; hexagonal crystal structure; typically purple and white, with no cleavage and conchoidal fracture. This specimen is polished and shaped, with a natural-looking rough base.
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Physical properties
Mohs hardness 7; vitreous luster; hexagonal crystal structure; typically purple and white, with no cleavage and conchoidal fracture. This specimen is polished and shaped, with a natural-looking rough base.
Formation & geological history
Amethyst forms when iron-bearing quartz grows in silica-rich fluids, commonly in volcanic cavities; the white chevron bands are milky quartz. The host deposits formed over geological time, often in ancient volcanic rocks.
Uses & applications
Used for jewelry, carvings, and mineral collecting; polished points are also sold as decorative objects.
Geological facts
Chevron or “dream” amethyst is recognized by its distinctive V-shaped bands of purple and white quartz.
Field identification & locations
Look for alternating angular purple and milky-white bands and glassy luster; major sources include Brazil, Uruguay, and India. Similar-looking dyed stones can be checked by examining color concentration and banding.
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