mineral

Clear Quartz Cluster

Silicon Dioxide (SiO2)

Hardness: 7 (Mohs scale); Color: Colorless to white; Luster: Vitreous; Crystal Structure: Hexagonal (Trigonal); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

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

Identified March 22, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale); Color: Colorless to white; Luster: Vitreous; Crystal Structure: Hexagonal (Trigonal); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Formation & geological history

Formed from silica-rich hydrothermal solutions cooling in rock cavities or veins. It can form in various geological environments over millions of years, often in pegmatites or sedimentary geodes.

Uses & applications

Used in electronics (oscillators), glassmaking, precision instruments, jewelry, and as decorative bases for art pieces like wire sculptures.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Its piezoelectric properties allow it to generate an electric charge under mechanical stress.

Field identification & locations

Identify in the field by its six-sided prismatic crystals ending in a pyramid, vitreous luster, and inability to be scratched by a steel knife. Common in Brazil, Arkansas (USA), and Madagascar.