metamorphic

Polished yellow-green pebble, possibly serpentine-rich stone

Unidentified fine-grained silicate rock; serpentine minerals (approx. Mg₃Si₂O₅(OH)₄) are a possibility

AI-generated identification · may be incorrect

Smooth, rounded, glossy yellow-green surface with darker specks; hardness, crystal structure, and specific gravity cannot be determined from the image. Serpentine typically has Mohs hardness 2.5–5 and a waxy to greasy luster.

Identified October 13, 2026More metamorphic →

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At a glance

Common name: Polished yellow-green pebble, possibly serpentine-rich stone
Scientific name: Unidentified fine-grained silicate rock; serpentine minerals (approx. Mg₃Si₂O₅(OH)₄) are a possibility
Category: metamorphic
Identified: October 13, 2026
Method: Standard

AI Estimated Value

About $1–$10 for a small, common polished pebble; more only if positively identified and unusually attractive.

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

Formation & geological history

Likely a water-worn pebble that was subsequently polished. If serpentine-bearing, it formed through hydration and alteration of magnesium-rich ultramafic rock; its age and source cannot be established visually.

Uses & applications

Small polished stones are used for collecting, decoration, and sometimes lapidary work; identification is needed before assigning a specific commercial use.

Geological facts

The image does not show diagnostic features sufficient to identify the pebble reliably; similar colors occur in several rocks and minerals.

Field identification & locations

A yellow-green color and rounded shape alone do not confirm serpentine. Check hardness, streak, and texture, or consult a local geologist; common serpentine occurrences include ultramafic-rock belts worldwide.