mineral
Banded Amethyst (Chevron Amethyst)
Silicon Dioxide (SiO2) with iron impurities
Hardness: 7 on Mohs scale; Color: Purple and white V-shaped bands; Luster: Vitreous; Crystal Structure: Trigonal/Hexagonal; Cleavage: None; Specific Gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- Purple and white V-shaped bands
- Luster
- Vitreous
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Physical properties
Hardness: 7 on Mohs scale; Color: Purple and white V-shaped bands; Luster: Vitreous; Crystal Structure: Trigonal/Hexagonal; Cleavage: None; Specific Gravity: 2.65
Formation & geological history
Formed in hydrothermal veins or volcanic cavities where layers of amethyst and milky quartz grow sequentially over thousands of years.
Uses & applications
Predominantly used for jewelry, lapidary arts, metaphysical practices, and decorative carvings.
Geological facts
The distinctive V-shape (chevron) results from the way the quartz crystals grow in a tight, crowded environment, alternating between rich purple and white quartz.
Field identification & locations
Identify by looking for strong, angular color zoning of purple and white. High durability makes it excellent for wire-wrapped pendants and daily wear.
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Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
Metamorphic
Epidote
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metamorphic
Gypsum (variety Selenite or Alabaster)
Calcium sulfate dihydrate (CaSO4·2H2O)
Mineral
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Nephrite
Mineral/Rock
Granite
Granite (Phaneritic intrusive igneous rock)
igneous