mineral

Likely tumbled quartz or feldspar pebble

Indeterminate; possibly quartz (SiO₂) or potassium feldspar (KAlSi₃O₈)

AI-generated identification · may be incorrect

Small, rounded, opaque-to-translucent pinkish-brown pebble with a dull to slightly waxy luster; estimated Mohs hardness 6–7 if quartz, or 6–6.5 if feldspar. Crystal structure cannot be determined from the image.

Identified September 7, 2026More mineral →

Explore Likely tumbled quartz or feldspar 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

Likely a naturally weathered or deliberately tumbled fragment of silicate rock; precise geological age and formation environment are indeterminate without testing. Pink coloration may reflect iron staining or feldspar composition.

Uses & applications

Common examples are used as decorative tumbled stones, craft material, and minor jewelry components; an isolated piece has little commercial value.

Geological facts

The image scale and lighting limit identification; hardness testing, streak, translucency, and a close view of fracture surfaces would distinguish quartz from feldspar and other materials.

Field identification & locations

Check whether it scratches glass (quartz generally does), examine cleavage (feldspar shows two good cleavage directions), and use a loupe for grains or crystal faces. Common source regions include granitic and metamorphic terrains worldwide.