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 trigonal crystal system with various colors including clear, white, yellow, and brown.

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 trigonal crystal system with various colors including clear, white, yellow, and brown.

Formation & geological history

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

Uses & applications

Used in electronics, glassmaking, abrasives, gemstones, and ornamental carvings.

Geological facts

Quartz is one of the most abundant minerals in the Earth's continental crust and exhibits piezoelectric properties, making it essential for accurate timekeeping in watches.

Field identification & locations

Identified easily by its high hardness (scratches glass), lack of cleavage, and conchoidal fracture; commonly found worldwide in pegmatites, veins, and sandstones.