mineral

Clear Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale; Color: Colorless to transparent; Luster: Vitreous; Crystal Structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific gravity: 2.65

Hardness: 7 on Mohs scale
Color: Colorless to transparent
Luster: Vitreous

Identified July 13, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Colorless to transparent; Luster: Vitreous; Crystal Structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific gravity: 2.65

Formation & geological history

Forms in wide variety of environments, most commonly from the cooling of magma or in hydrothermal veins and pegmatites. It is one of the most abundant minerals in Earth's crust.

Uses & applications

Used in jewelry, decorative items, electronics (piezoelectric properties), and glassmaking. Highly valued by collectors for varied forms.

Geological facts

Quartz is known as the 'Universal Crystal' in various cultures. It is the second most abundant mineral in Earth's continental crust after feldspar.

Field identification & locations

Identify in the field by its hardness (scratches glass), lack of cleavage, and common six-sided prismatic crystal shape when non-tumbled. Found globally.