mineral

Clear Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Colorless to white; Luster: Vitreous (glassy); Crystal Structure: Hexagonal/Trigonal (six-sided prisms); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65.

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

Identified April 6, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Colorless to white; Luster: Vitreous (glassy); Crystal Structure: Hexagonal/Trigonal (six-sided prisms); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65.

Formation & geological history

Formed through hydrothermal processes when silica-rich hot fluids cool and crystallize in crustal cavities, veins, or pegmatites. These can form across various geological ages from Precambrian to Cenozoic.

Uses & applications

Used in electronics (oscillators), optics, glassmaking, abrasive manufacturing, and heavily in the jewelry and metaphysical collector markets.

Geological facts

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

Field identification & locations

Identify by its hexagonal point habit, lack of cleavage, and ability to scratch glass. Commonly found in mountainous regions worldwide; significant deposits exist in Arkansas (USA), Brazil, and Madagascar.