mineral

Clear Quartz

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Colorless/Transparent; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: Indistinct; Specific Gravity: 2.65

Hardness: 7 on Mohs scale
Color: Colorless/Transparent
Luster: Vitreous (glassy)

Identified May 31, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Colorless/Transparent; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: Indistinct; Specific Gravity: 2.65

Formation & geological history

Formed primarily from the cooling of silica-rich magma or through hydrothermal activity in veins. It can be found in all types of geological environments (igneous, metamorphic, and sedimentary) across all geological ages.

Uses & applications

Used in electronics (oscillators), optics, glassmaking, abrasives, and as a gemstone for jewelry and metaphysical collecting.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Its name comes from the German word 'Quarz', which is of Slavic origin. It exhibits piezoelectric properties, meaning it generates an electric charge when mechanical stress is applied.

Field identification & locations

Identified by its high hardness (it can scratch glass and steel), glassy luster, and conchoidal (shell-like) fracture. Found worldwide, prominent locations include Brazil, Arkansas (USA), and Madagascar.