mineral

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Colorless/Transparent; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: Indistinct/Conchoidal fracture; Specific Gravity: 2.65

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

Identified June 25, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Colorless/Transparent; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: Indistinct/Conchoidal fracture; Specific Gravity: 2.65

Formation & geological history

Formed from silica-rich hydrothermal solutions or cooling magma. It is found in igneous, metamorphic, and sedimentary environments across all geological ages.

Uses & applications

Used in electronics (oscillators), optics, glass making, abrasives, jewelry (as gemstones), and spiritual/healing practices.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Piezoelectric properties allow it to generate an electric charge under mechanical stress, which is why it is used in watches.

Field identification & locations

Identify by its hexagonal prism shape and ability to scratch glass. Found globally, especially in mountainous regions or inside geodes. Collectors look for clarity and termination points.