mineral

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Typically white to translucent with a vitreous-to-waxy luster; hardness 7 Mohs, no cleavage, conchoidal fracture, and trigonal crystal structure. The rounded shape indicates mechanical tumbling or natural abrasion.

Identified August 9, 2026More mineral →

Explore Tumbled milky quartz in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Forms when silica-rich fluids crystallize in veins, cavities, and igneous or metamorphic rocks; the specimen is likely Precambrian-to-young vein quartz, though age cannot be determined visually. Milky appearance comes from microscopic fluid inclusions and structural defects.

Uses & applications

Used for decorative stone, landscaping, carvings, countertops, and low-cost jewelry or craft pieces. Its value is mainly ornamental rather than industrial in this small form.

Geological facts

Quartz is one of Earth’s most abundant minerals and is chemically resistant, commonly surviving transport as rounded pebbles. The image could also represent pale chalcedony or quartzite, but visible granular translucence favors quartz.

Field identification & locations

Identify by its glassy/waxy luster, lack of cleavage, white translucence, and ability to scratch ordinary glass. Common in hydrothermal veins, pegmatites, stream gravels, and many mountain regions.