mineral

Clear Quartz

Silicon Dioxide (SiO2)

Hardness: 7 (Mohs scale); Color: Colorless/Transparent; Luster: Vitreous; Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

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

Identified April 16, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale); Color: Colorless/Transparent; Luster: Vitreous; Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments. Typically crystallizes from magma or precipitates from hydrothermal veins. Often found in pegmatites or as a major constituent of granite.

Uses & applications

Used in electronics (oscillators), optics, glassmaking, construction (as aggregate), jewelry (faceted stones, beads), and for decorative or holistic collecting.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. It is piezoelectric, meaning it generates an electric charge in response to applied mechanical stress, which is why it is used in watches.

Field identification & locations

Identify by its ability to scratch glass, its lack of cleavage, and its characteristic six-sided crystal points (when intact). Commonly found in quartz veins globally.