mineral

Tumbled green stone, possibly serpentine or epidote-bearing rock

Uncertain from image; likely serpentine-group mineral (Mg₃Si₂O₅(OH)₄) or epidote-rich metamorphic rock

AI-generated identification · may be incorrect

Small rounded pebble with mottled olive-green and gray coloration, dull to slightly waxy luster, and no visible crystal faces. Serpentine has Mohs hardness 2.5–4; epidote-rich material is typically 6–7; cleavage and specific gravity cannot be determined visually.

Identified August 30, 2026More mineral →

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At a glance

Common name: Tumbled green stone, possibly serpentine or epidote-bearing rock
Scientific name: Uncertain from image; likely serpentine-group mineral (Mg₃Si₂O₅(OH)₄) or epidote-rich metamorphic rock
Category: mineral
Identified: August 30, 2026
Method: Standard

AI Estimated Value

About $1–$10 as a small unidentified tumbled pebble; approximately $10–$50 if verified as attractive serpentine or jade-quality material.

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 formed by hydrothermal alteration of ultramafic rocks (serpentine) or regional metamorphism producing epidote-rich rock; age depends on locality and may range from Paleozoic to recent geologic settings.

Uses & applications

Commonly sold as a tumbled decorative stone, carving material, or inexpensive lapidary specimen; serpentine is also used ornamentally in larger pieces.

Geological facts

The image does not show diagnostic features sufficient for a confident species identification; similar green pebbles may also be jade, chlorite schist, or greenstone.

Field identification & locations

Test hardness, streak, translucency, and density; serpentine is relatively soft and often waxy, whereas jade is tougher and harder. Common sources include California, New Zealand, Italy, Canada, and Afghanistan.