mineral

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Hardness: 7 on Mohs scale; Color: Colorless to white; Luster: Vitreous; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65

Hardness: 7 on Mohs scale
Color: Colorless to white
Luster: Vitreous

Identified July 19, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Colorless to white; Luster: Vitreous; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65

Formation & geological history

Formed through the cooling of silica-rich magma or precipitation from hydrothermal veins. It is found in all geological environments and can be billions of years old.

Uses & applications

Used in electronics for its piezoelectric properties, glassmaking, abrasives, jewelry (as a gemstone), and as decorative collectibles.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Its name comes from the Greek word 'krustallos', meaning ice, as ancient Greeks believed it was ice frozen so hard it would never melt.

Field identification & locations

Identify by its hardness (scratches glass), glass-like luster, and lack of cleavage. It is found globally, particularly in mountainous regions or as sand in riverbeds and beaches.