Clear Quartz

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 cooling and crystallization of silica-rich magma or from hydrothermal solutions in veins and geodes. It can be found in rocks of all geological ages.

Uses & Applications

Used in electronics for its piezoelectric properties, glassmaking, abrasives, jewelry (gemstones), and by crystal collectors for aesthetic and metaphysical purposes.

Geological Facts

Quartz is the second most abundant mineral in Earth's continental crust. It is highly resistant to both chemical and physical weathering, which is why it's a primary component of sand.

Field Identification & Locations

Identify in the field by its hardness (will scratch glass but won't be scratched by a steel knife) and its lack of cleavage. Common locations include Brazil, Madagascar, and the United States (specifically Arkansas).

Identified on: 4/18/2026

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