mineral

Tumbled white quartz

Quartz (silicon dioxide, SiO₂), likely milky quartz

AI-generated identification · may be incorrect

Hardness 7 Mohs; white to translucent with a vitreous-to-waxy luster and no cleavage. Trigonal crystal structure is obscured by tumbling; specific gravity is about 2.65.

Identified August 22, 2026More mineral →

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Physical properties

Hardness 7 Mohs; white to translucent with a vitreous-to-waxy luster and no cleavage. Trigonal crystal structure is obscured by tumbling; specific gravity is about 2.65.

Formation & geological history

Forms when silica-rich fluids crystallize in igneous, metamorphic, or hydrothermal environments; its geological age may range from recent deposits to billions of years. The rounded shape is human-produced by abrasion in a tumbler.

Uses & applications

Used as an inexpensive lapidary, craft, and metaphysical stone; quartz is also important in glass, ceramics, electronics, and construction aggregate.

Geological facts

Milky color results from microscopic fluid inclusions, fractures, or impurities. Quartz is one of Earth’s most abundant and chemically resistant minerals.

Field identification & locations

Identify by its white translucency, glassy appearance, lack of cleavage, and ability to scratch ordinary glass; confirm with hardness and specific-gravity tests. Common worldwide, especially in granite, pegmatites, veins, and quartz-rich sediment.