mineral

Quartz Crystal

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale; Color: Colorless to white (milky); Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Hardness: 7 on Mohs scale
Color: Colorless to white (milky)
Luster: Vitreous (glassy)

Identified April 23, 2026More mineral →

Explore Quartz Crystal in the encyclopedia →

Identify your own rocks.

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

App Store Google Play

Physical properties

Hardness: 7 on Mohs scale; Color: Colorless to white (milky); Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Formation & geological history

Formed from silica-rich hydrothermal solutions or cooling magma. This specimen specifically appears to be a cluster or a section of a geode/vug, often found in igneous or metamorphic rock cracks.

Uses & applications

Used in electronics (oscillators), glass manufacturing, abrasives, gemstones, and widely as a healing or decorative crystal for collectors.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. It is piezoelectric, meaning it generates an electric charge when mechanical stress is applied.

Field identification & locations

Identify in the field by its hardness (cannot be scratched by steel) and lack of cleavage. Common in many environments, particularly inside Arkansas and Brazil quartz mines.