Rock Identifier
Tumbled Quartz (Silicon Dioxide (SiO2)) — mineral
mineral

Tumbled Quartz

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale, Color: Brownish-orange/amber due to mineral inclusions, Luster: Vitreous to greasy when tumbled, Crystal system: Trigonal, Cleavage: None

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Physical properties

Hardness: 7 on Mohs scale, Color: Brownish-orange/amber due to mineral inclusions, Luster: Vitreous to greasy when tumbled, Crystal system: Trigonal, Cleavage: None

Formation & geological history

Formed in various geological environments, commonly hydrothermal veins and pegmatites, later weathered and water-worn or tumbled artificially.

Uses & applications

Used for jewelry, decorative items, meditation, and crystal collecting.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectric properties.

Field identification & locations

Identified by its conchoidal fracture, high hardness (scratches glass), and lack of cleavage. Found worldwide.