mineral

Engraved green stone worry pebble

Likely nephrite jade (tremolite–actinolite series); identification is uncertain from the image

AI-generated identification · may be incorrect

Smooth, polished, opaque green oval with a waxy-to-greasy luster and engraved numbers. If nephrite, hardness is about 6–6.5 Mohs and its crystal structure is fine, interlocking amphibole fibers; the stone cannot be confirmed visually.

Identified September 26, 2026More mineral →

Explore Engraved green stone worry 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

Nephrite forms through metamorphic or metasomatic alteration, commonly in serpentinite-related settings; its age depends on the deposit. The pebble has been shaped, polished, and engraved by human hands.

Uses & applications

Used as a pocket or worry stone, keepsake, or decorative object; genuine jade may also be carved into jewelry and ornaments.

Geological facts

The engraved number is not diagnostic of the stone. Similar green pebbles can be serpentine, quartzite, or other materials, so testing or expert examination is needed to establish identity.

Field identification & locations

Look for exceptional toughness, a waxy surface, and a dense, compact feel; these clues do not reliably distinguish nephrite from look-alikes. Nephrite occurs in places including China, British Columbia, New Zealand, and Siberia.