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, transparent to opaque, vitreous luster, hexagonal crystal system, and no cleavage.

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, transparent to opaque, vitreous luster, hexagonal crystal system, and no cleavage.

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, construction materials, and as a gemstone or specimen in jewelry.

Geological facts

Quartz is one of the most abundant minerals in Earth's continental crust and exhibits piezoelectric properties.

Field identification & locations

Identified easily by its high hardness, lack of cleavage, and distinct conchoidal fracture; found globally in nearly all geological settings.