mineral
Clear Quartz Crystal
Silicon Dioxide (SiO2), Quartz
Hardness of 7 on the Mohs scale, colorless or white, vitreous (glassy) luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, colorless or white, vitreous (glassy) luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.
Formation & geological history
Forms primarily in hydrothermal veins and pegmatites from silica-rich aqueous solutions cooling and precipitating under various geological conditions.
Uses & applications
Widely used in jewelry, decorative items, oscillators in electronics, and prized by mineral collectors.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectric properties, meaning it can generate an electrical charge under mechanical stress.
Field identification & locations
Easily identified by its characteristic hexagonal crystal shape, lack of cleavage, and high hardness capable of scratching glass. Found globally.
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