mineral

Clear Quartz

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Colorless/Transparent; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

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

Identified June 21, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Colorless/Transparent; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Formation & geological history

Forms in a wide variety of environments including igneous, metamorphic, and sedimentary settings. Most commonly crystallizes from magma or hydrothermal vents. It is found in earth's crust dating back billions of years.

Uses & applications

Used in electronics for its piezoelectric properties, glass manufacturing, timekeeping (quartz watches), and widely used in jewelry and gemstone collecting.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. It was historically used to make stone tools and has been revered in various cultures for its supposed healing properties.

Field identification & locations

Identify by its hardness (can scratch glass), lack of cleavage, and transparent appearance. Commonly found globally in mountains, riverbeds, and as sand on beaches.