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 translucent color, vitreous luster, hexagonal crystal system, conchoidal fracture with no true 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 translucent color, vitreous luster, hexagonal crystal system, conchoidal fracture with no true cleavage.

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments through crystallization from silica-rich melts or hydrothermal solutions.

Uses & applications

Widely used in electronics, glassmaking, precision instruments, and as a semi-precious gemstone or collector mineral.

Geological facts

Quartz is one of the most abundant minerals in Earth's continental crust and exhibits piezoelectric properties, generating an electric charge under mechanical stress.

Field identification & locations

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