mineral

Clear Quartz Crystal

Silicon Dioxide (SiO2)

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

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

Identified April 2, 2026More mineral →

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Physical properties

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

Formation & geological history

Formed from silica-rich hydrothermal fluids cooling in cavities and veins within igneous, metamorphic, or sedimentary host rocks. Can be found in geological environments ranging from ancient Precambrian shields to relatively recent volcanic fields.

Uses & applications

Used in electronics (oscillators), manufacturing of glass and ceramics, as gemstones in jewelry, and highly popular for metaphysical/healing collecting.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. It is piezoelectric, meaning it can generate an electric charge when mechanical pressure is applied, which is why it is used in watches.

Field identification & locations

Identify in the field by its hexagonal crystal habit (six-sided prisms), its ability to scratch glass, and lack of cleavage. Commonly found in pegmatites, hydrothermal veins, and as a primary constituent of granites.