mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

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

Identified May 21, 2026More mineral →

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Physical properties

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

Formation & geological history

Forms in a wide variety of environments, most commonly by crystallizing from magma or precipitating from hydrothermal veins. It can be found in igneous, metamorphic, and sedimentary rocks across all geological ages.

Uses & applications

Used in electronics (piezoelectric properties), glassmaking, abrasives, jewelry (as a gemstone), and as decorative points for collectors and metaphysical use.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. When absolutely pure, it is perfectly clear; impurities create varieties like Amethyst, Citrine, and Smoky Quartz.

Field identification & locations

Identify in the field by its hexagonal crystal shape, lack of cleavage, and ability to scratch glass. Found globally, with notable deposits in Brazil, Arkansas (USA), and Madagascar.