mineral

Tumbled cream-colored quartz pebble

Quartz (silicon dioxide, SiO₂), likely milky quartz

AI-generated identification · may be incorrect

Hardness 7 Mohs; off-white to pale cream, translucent in thin edges, with a vitreous-to-waxy luster. It has a trigonal crystal structure but no visible cleavage; the rounded shape indicates natural abrasion or tumbling.

Identified September 13, 2026More mineral →

Explore Tumbled cream-colored quartz pebble 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

Quartz crystallizes from silica-rich igneous, metamorphic, or hydrothermal fluids and is extremely resistant to weathering. Its exact geological age and source cannot be determined from the photograph.

Uses & applications

Common quartz is used in glass, ceramics, abrasives, electronics, and decorative stone; attractive polished pieces are sold as inexpensive lapidary specimens.

Geological facts

Milky quartz appears cloudy because of microscopic fluid inclusions, fractures, or mineral impurities. It commonly forms veins and survives transport as rounded stream gravel.

Field identification & locations

Identify it by its pale color, glassy/waxy surface, lack of cleavage, and ability to scratch ordinary glass; a steel knife should not scratch it. Common worldwide, especially in quartz veins and river deposits.