mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Hardness: 7 on Mohs scale
Color: Colorless/Transparent
Luster: Vitreous (glass-like)

Identified July 12, 2026More mineral →

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Physical properties

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

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments. Primarily crystallizes from cooling magma or hydrothermal veins. It is found in geological formations ranging from billions of years old to relatively recent deposits.

Uses & applications

Used in electronics (quartz oscillators), glassmaking, abrasives, jewelry (gemstones), and as a popular collector specimen for metaphysical and aesthetic purposes.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. It is piezoelectric, meaning it generates an electric charge in response to applied mechanical stress.

Field identification & locations

Identified by its ability to scratch glass, its lack of cleavage, and its characteristic conchoidal (shell-like) fracture. Found globally, especially in mountainous regions or riverbeds as weathered pebbles.