mineral

Raw Quartz

Silicon Dioxide (SiO2)

Hardness of 7 on the Mohs scale, typically white or translucent, vitreous to greasy luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.

Identified July 29, 2026More mineral →

Explore Raw Quartz in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness of 7 on the Mohs scale, typically white or translucent, vitreous to greasy luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.

Formation & geological history

Forms in a wide variety of environments including igneous, metamorphic, and sedimentary rocks. Often precipitates from hydrothermal solutions or crystallizes out of silica-rich magma.

Uses & applications

Used in glassmaking, electronics, oscillators, gemstones, and abrasive materials.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust, surpassed only by feldspar. It exhibits piezoelectric properties, meaning it can generate an electrical charge in response to mechanical stress.

Field identification & locations

Easily identified by its distinct hardness (scratches glass), lack of cleavage, and conchoidal fracture. Found worldwide in almost every geological setting.