mineral

Tumbled white stone, possibly milky quartz

Milky quartz (quartz, SiO₂), identification uncertain from image

AI-generated identification · may be incorrect

Opaque white, smooth rounded/tumbled surface, vitreous to waxy luster; quartz hardness 7, hexagonal crystal structure, no cleavage, specific gravity about 2.65. The specimen could also be white calcite or another pale decorative stone.

Identified August 25, 2026More mineral →

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Physical properties

Formation & geological history

If quartz, it formed from silica-rich hydrothermal fluids or igneous/metamorphic processes, commonly in veins and cavities; its exact geological age cannot be determined visually. Tumbling produced the rounded shape and polished surface.

Uses & applications

Used as a decorative or lapidary stone, craft material, and inexpensive collectible; quartz is also important in glass, electronics, and industrial abrasives.

Geological facts

Milky appearance results from microscopic fluid inclusions, fractures, or mineral impurities scattering light.

Field identification & locations

Commonly found as rounded vein fragments or pebbles worldwide; a glass-scratch test can distinguish quartz from softer calcite, though it may damage the specimen. Image-only identification is provisional.