mineral

Clear Quartz

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Colorless or transparent; Luster: Vitreous (glassy); Crystal structure: Trigonal (hexagonal prism); Cleavage: None (conchoidal fracture); Specific gravity: 2.65

Hardness: 7 on Mohs scale
Color: Colorless or transparent
Luster: Vitreous (glassy)

Identified August 2, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Colorless or transparent; Luster: Vitreous (glassy); Crystal structure: Trigonal (hexagonal prism); Cleavage: None (conchoidal fracture); Specific gravity: 2.65

Formation & geological history

Forms in hydrothermal veins, pegmatites, and as a primary component of many igneous, metamorphic, and sedimentary rocks. Can form at various geological times depending on the specific host rock and environment.

Uses & applications

Used in electronics (oscillators), glassmaking, gemstones, optical lenses, and spiritual/metaphysical practices.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. It exhibits piezoelectricity, meaning it can generate an electrical charge in response to applied mechanical stress.

Field identification & locations

Easily identified by its distinct lack of cleavage, conchoidal fracture, hardness of 7 (will scratch glass), and vitreous luster. Found worldwide in almost every geological environment.