mineral

Clear Quartz

Silicon dioxide (SiO2)

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

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

Identified May 24, 2026More mineral →

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Physical properties

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

Formation & geological history

Formed through the crystallization of silica-rich magma or from hydrothermal solutions in veins. It is found in all types of geological environments and can range from millions to billions of years old.

Uses & applications

Used in electronics (oscillators), optics, glassmaking, ceramics, and as a gemstone in jewelry. It is also highly popular for metaphysical use and decorative 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, because ancient Greeks believed quartz was ice that had frozen so hard it would never melt.

Field identification & locations

Identify by its hardness (scratches glass), lack of cleavage, and six-sided crystal points. It is commonly found in gravel beds, mountain ranges, and as a primary component of granitic rocks.