mineral

Clear Quartz Crystal

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Mohs hardness of 7; colorless or transparent; vitreous (glassy) luster; hexagonal crystal system with prismatic habit; no cleavage, exhibits conchoidal fracture; specific gravity of 2.65.

Identified August 7, 2026More mineral →

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Physical properties

Mohs hardness of 7; colorless or transparent; vitreous (glassy) luster; hexagonal crystal system with prismatic habit; no cleavage, exhibits conchoidal fracture; specific gravity of 2.65.

Formation & geological history

Forms in hydrothermal veins, pegmatites, and as a secondary mineral in sedimentary rocks from cooling silica-rich aqueous solutions over millions of years.

Uses & applications

Used in electronics (oscillators), manufacturing of glass and optics, abrasive materials, jewelry, and crystal healing or mineral collecting.

Geological facts

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

Field identification & locations

Easily identified by its characteristic hexagonal crystal shape, lack of cleavage, and hardness (scratches glass). Found worldwide, with major deposits in Brazil, the USA, Madagascar, and the Alps.