mineral

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Colorless/transparent; Luster: Vitreous (glass-like); Crystal Structure: Hexagonal (trigonal); Cleavage: None/Conchoidal fracture; SG: 2.65

Hardness: 7 on Mohs scale
Color: Colorless/transparent
Luster: Vitreous (glass-like)

Identified July 18, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Colorless/transparent; Luster: Vitreous (glass-like); Crystal Structure: Hexagonal (trigonal); Cleavage: None/Conchoidal fracture; SG: 2.65

Formation & geological history

Formed through the cooling of silica-rich magma or precipitation from hydrothermal veins. It can be found in igneous, metamorphic, and sedimentary environments globally.

Uses & applications

Used in electronics (oscillators), glassmaking, precision instruments, jewelry, and widely collected as metaphysical or decorative specimens.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. It is piezoelectric, meaning it generates an electric charge when mechanical pressure is applied.

Field identification & locations

Identify by its ability to scratch glass, its hexagonal prism shape with pyramidal terminations, and its lack of cleavage. Common in mountain ranges like the Alps, Andes, and Arkansas (USA).