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 white to clear coloration.

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 white to clear coloration.

Formation & geological history

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

Uses & applications

Used widely in electronics, glassmaking, abrasive manufacturing, and as a semi-precious gemstone in jewelry.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust and exhibits strong piezoelectric properties.

Field identification & locations

Easily identified by its high hardness (scratches glass) and lack of cleavage; found globally in almost all rock types.