mineral

Likely tumbled white quartz or quartzite pebble

Quartz (SiO₂), possibly quartzite

AI-generated identification · may be incorrect

Small, rounded, opaque white specimen with a dull-to-waxy luster; quartz hardness is Mohs 7, with no cleavage and conchoidal fracture. Grain size and internal texture are unclear from the image, so quartzite cannot be excluded.

Identified August 25, 2026More mineral →

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Physical properties

Formation & geological history

Quartz crystallizes from silica-rich igneous, hydrothermal, or sedimentary systems; quartzite forms when quartz sandstone is metamorphosed. The smooth shape suggests natural water abrasion or tumbling; age is indeterminate.

Uses & applications

Used in glass, ceramics, electronics, abrasives, countertops, and construction aggregate; attractive pieces may be sold as tumbled stones.

Geological facts

Quartz is one of Earth’s most abundant minerals and is chemically resistant, commonly surviving weathering as rounded pebbles.

Field identification & locations

Test with a steel knife or glass: genuine quartz should scratch glass and resist a knife. Common in river gravels, beaches, quartz veins, and landscaping stone; the image alone cannot distinguish it reliably from white marble or ceramic.