mineral

White Quartz (Tumbled)

Quartz (Silicon Dioxide, SiO2)

Hardness: 7 on Mohs scale; Color: Milky white to translucent; Luster: Vitreous (glassy) to waxy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Hardness: 7 on Mohs scale
Color: Milky white to translucent
Luster: Vitreous (glassy) to waxy

Identified March 15, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Milky white to translucent; Luster: Vitreous (glassy) to waxy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Formation & geological history

Formed through the crystallization of silica-rich magma or from hydrothermal veins. It is one of the most abundant minerals on Earth and can be found in rocks of all geological ages, from Precambrian to the present.

Uses & applications

Used extensively in glassmaking, electronics (piezoelectric properties), abrasives, and as a popular gemstone for lapidary work, decorative 'tumbled' stones, and spiritual/metaphysical collections.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Its name comes from the German word 'Quarz', which likely originated from Slavic roots meaning 'hard'. Milky quartz gets its white color from tiny pocket inclusions of gas or liquid trapped during crystal growth.

Field identification & locations

Identify by its ability to scratch glass (hardness 7) and lack of cleavage. Tumbled specimens like the one pictured are common in gift shops and can be found globally in riverbeds, beaches, and mountain ranges. Collectors look for clarity and absence of heavy fracturing.

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