mineral
Clear Quartz (Rock Crystal) Bead
Silicon Dioxide (SiO2)
Hardness: 7 Mohs; Color: Colorless/transparent; Luster: Vitreous; Crystal structure: Trigonal/Hexagonal; Cleavage: None/Indistinct; Specific Gravity: 2.65
- Hardness
- 7 Mohs
- Color
- Colorless/transparent
- Luster
- Vitreous
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Physical properties
Hardness: 7 Mohs; Color: Colorless/transparent; Luster: Vitreous; Crystal structure: Trigonal/Hexagonal; Cleavage: None/Indistinct; Specific Gravity: 2.65
Formation & geological history
Quartz forms from cooling silica-rich magma or from hydrothermal veins. It is one of the most common minerals in the Earth's crust across all geological ages and environments.
Uses & applications
Used in gemstone beads, jewelry, healing crystals, and glass manufacturing. Also used in electronics for its piezoelectric properties.
Geological facts
Quartz is the most abundant mineral on the Earth's surface. The name comes from the Greek word 'krustallos', meaning ice, as ancient peoples believed it was permanently frozen ice.
Field identification & locations
Identified by its transparent appearance, lack of cleavage, and ability to scratch glass. This specific specimen has been human-processed into a faceted bead.
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Mineral
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Mineral/Rock