mineral

Tumbled white quartz

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Likely milky quartz: white, translucent-to-opaque, vitreous-to-waxy luster, hardness 7 Mohs, no cleavage, conchoidal fracture, and trigonal crystal structure. Its smooth shape indicates tumbling or natural water abrasion.

Identified August 17, 2026More mineral →

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Physical properties

Formation & geological history

Forms in igneous, metamorphic, and hydrothermal environments when silica-rich fluids crystallize; specimens may range from ancient to geologically recent. Common sources include Brazil, Madagascar, the United States, and other quartz-bearing regions.

Uses & applications

Used as a low-cost decorative stone, worry stone, craft material, and crystal-collecting specimen; quartz is also important industrially in glass, ceramics, electronics, and engineered stone.

Geological facts

Milky color results from microscopic fluid inclusions, fractures, or impurities. Quartz is one of Earth’s most abundant minerals and commonly occurs in granite, pegmatites, veins, and sedimentary gravel.

Field identification & locations

Identify it by its white color, glassy/waxy surface, lack of cleavage, and ability to scratch ordinary glass; a steel nail will not scratch it. The image cannot confirm whether it is quartz rather than white calcite or ceramic, but the appearance is consistent with tumbled quartz.