mineral

Clear Quartz

Silicon Dioxide (SiO2)

Hardness: 7 (Mohs scale), Color: Colorless to white/cloudy, Luster: Vitreous (glassy), Crystal structure: Trigonal/Hexagonal, Cleavage: None/Conchoidal fracture, Specific gravity: 2.65

Identified May 2, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale), Color: Colorless to white/cloudy, Luster: Vitreous (glassy), Crystal structure: Trigonal/Hexagonal, Cleavage: None/Conchoidal fracture, Specific gravity: 2.65

Formation & geological history

Formed through the crystallization of magma or from hydrothermal veins. It can form in various temperatures and pressures across all three rock types. Geological age varies significantly by deposit.

Uses & applications

Extensively used in electronics for its piezoelectric properties, glassmaking, timekeeping (quartz watches), and jewelry/ornamental carvings. Highly valued in metaphysical collecting.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Its name comes from the Greek word 'krustallos' meaning ice, as ancient Greeks believed quartz was ice frozen so hard it would never melt.

Field identification & locations

Identified in the field by its hardness (scratches glass), lack of cleavage, and hexagonal crystal habit. Found globally, with major deposits in Brazil and Arkansas, USA.