Rock Identifier
Quartz (Silicon Dioxide (SiO2)) — mineral
mineral

Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and hexagonal crystal system. It occurs in various colors including clear, white, purple, and pink.

Identified More mineral →
Explore Quartz in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

Physical properties

Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and hexagonal crystal system. It occurs in various colors including clear, white, purple, and pink.

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments through the crystallization of silica-rich fluids at various temperatures and pressures.

Uses & applications

Widely used in electronics, glassmaking, precision instruments, and as gemstones or decorative mineral specimens.

Geological facts

Quartz is one of the most abundant minerals in Earth's continental crust and exhibits piezoelectric properties, making it useful in watches and electronic oscillators.

Field identification & locations

Identified by its high hardness (scratches glass), lack of cleavage, and distinct conchoidal fracture. Found worldwide in nearly every geological environment.