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

Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on Mohs scale, transparent to translucent with a vitreous luster, lacks cleavage, and exhibits conchoidal fracture.

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 Mohs scale, transparent to translucent with a vitreous luster, lacks cleavage, and exhibits conchoidal fracture.

Formation & geological history

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

Uses & applications

Used extensively in glassmaking, electronics, oscillators, abrasives, and as gemstone jewelry.

Geological facts

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

Field identification & locations

Identified easily by its high hardness (scratches glass) and conchoidal fracture; found worldwide in veins and pegmatites.