mineral

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

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

Hardness: 7 on Mohs scale
Color: Colorless/Transparent
Luster: Vitreous (glassy)

Identified May 11, 2026More mineral →

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Physical properties

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

Formation & geological history

Forms in all temperatures and environments, most commonly from the cooling of silica-rich magma or through hydrothermal precipitation in veins and cavities. It can be found in igneous, metamorphic, and sedimentary rocks.

Uses & applications

Used in electronics (oscillators), glassmaking, abrasives, jewelry (as a gemstone), and as a popular specimen for mineral collectors and metaphysical practices.

Geological facts

Quartz is one of the most abundant minerals in Earth's continental crust. Its piezoelectric properties allow it to generate an electric charge when mechanical stress is applied, making it essential for clocks and watches.

Field identification & locations

Identify in the field by its hardness (scratches glass), lack of cleavage, and vertical striations on crystal faces. It is commonly found in gravel pits, mountain ranges, and near volcanic regions worldwide.