mineral

White tumbled stone (possibly milky quartz)

Likely quartz, SiO₂; exact identification is uncertain from the image

AI-generated identification · may be incorrect

Smooth, rounded, opaque white to cream surface with a subdued luster. If quartz, hardness is 7 Mohs, crystal structure is trigonal, and specific gravity is about 2.65; the image does not show diagnostic cleavage or fracture.

Identified September 25, 2026More mineral →

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Physical properties

Formation & geological history

Possibly a natural quartz pebble rounded by water or a quartz piece mechanically tumbled and polished. Quartz forms in many geological settings and occurs in rocks of nearly all ages.

Uses & applications

Decorative and collectible; quartz is also used in glassmaking, electronics, and jewelry.

Geological facts

Milky quartz gets its cloudy appearance from microscopic fluid or gas inclusions. A photo alone cannot confirm the material or its treatment.

Field identification & locations

Check hardness and fracture on an inconspicuous spot: quartz resists a steel knife and typically breaks with a curved, glassy fracture. Similar white pebbles can be calcite, marble, or manufactured material.