metamorphic

Green tumbled stone, possibly serpentine

Undetermined; appearance is consistent with serpentine-rich rock (serpentinite), but the image alone cannot confirm identification.

AI-generated identification · may be incorrect

Opaque, muted green, smooth and rounded with a matte-to-waxy appearance. If serpentinite, typical hardness is about 3–5 Mohs; composition and crystal structure cannot be established visually here.

Identified September 23, 2026More metamorphic →

Explore Green tumbled stone, possibly serpentine in the encyclopedia →

Identify your own rocks.

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

App Store Google Play

At a glance

Common name: Green tumbled stone, possibly serpentine
Scientific name: Undetermined; appearance is consistent with serpentine-rich rock (serpentinite), but the image alone cannot confirm identification.
Category: metamorphic
Identified: September 23, 2026
Method: Standard

AI Estimated Value

About $1–$10 for a small common tumbled stone; identification and quality could change the estimate.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Opaque, muted green, smooth and rounded with a matte-to-waxy appearance. If serpentinite, typical hardness is about 3–5 Mohs; composition and crystal structure cannot be established visually here.

Formation & geological history

Serpentinite forms when water alters ultramafic rock, commonly in ancient oceanic crust and along tectonic boundaries. The specimen appears shaped or worn smooth; its geological age and provenance are unknown.

Uses & applications

Tumbled green stones are used for decoration, crafts, and inexpensive jewelry; serpentinite is also used as ornamental stone.

Geological facts

Many unrelated minerals and rocks can look similar when tumbled, including serpentine, green jasper, and dyed materials.

Field identification & locations

A hardness test, streak, specific gravity, and close examination are needed for identification; avoid acid or destructive tests on a potentially valuable specimen.