sedimentary

Rounded greenish pebble

Indeterminate; likely weathered quartzite, greenstone, or altered volcanic rock

AI-generated identification · may be incorrect

Fine-grained, dull to weakly earthy luster, olive-green to tan coloration, and smoothly water-worn shape; approximate hardness 5–7 Mohs, but composition cannot be confirmed visually. No visible crystals or cleavage.

Identified September 7, 2026More sedimentary →

Explore Rounded greenish 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

Probably a naturally rounded stream or beach cobble formed by prolonged abrasion; its exact geological age and parent rock are undetermined from the image.

Uses & applications

Primarily a curiosity, craft stone, or paperweight; not identifiable as a gem-quality material or building stone from this photograph.

Geological facts

The green color may reflect chlorite, epidote, serpentine, or altered iron-bearing minerals. Surface texture and lighting can also make ordinary sedimentary or volcanic pebbles appear green.

Field identification & locations

Test hardness against glass and a steel knife, inspect a fresh break for grains or layers, and use streak, magnetism, acid reaction, or professional microscopy for identification. Commonly found in gravel beds, rivers, and beaches.