mineral

Pale green rough mineral fragment, likely serpentine or chrysoprase

Probable serpentine-group mineral (Mg₃Si₂O₅(OH)₄) or nickeline-free green chalcedony; identification is uncertain from the image

AI-generated identification · may be incorrect

Small pale green, opaque to weakly translucent, dull-to-waxy specimen with an irregular fracture and no visible crystal faces. Likely Mohs 2.5–4 if serpentine, or about 6.5–7 if chrysoprase; specific gravity and streak testing would distinguish them.

Identified August 19, 2026More mineral →

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At a glance

Common name: Pale green rough mineral fragment, likely serpentine or chrysoprase
Scientific name: Probable serpentine-group mineral (Mg₃Si₂O₅(OH)₄) or nickeline-free green chalcedony; identification is uncertain from the image
Category: mineral
Identified: August 19, 2026
Method: Standard

AI Estimated Value

About $1–$10 as an unidentified small fragment; roughly $10–$50 if confirmed attractive chrysoprase or carving-grade serpentine.

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

Serpentine forms when ultramafic rocks are hydrothermally altered, commonly during plate subduction; chrysoprase is nickel-colored chalcedony formed in weathering zones. Neither can be assigned a geological age from the photograph.

Uses & applications

Serpentine is used for carving, ornaments, and occasionally countertops; chrysoprase is a semiprecious gemstone and cabochon material.

Geological facts

The vivid green color may result from nickel-bearing minerals, but color alone is not diagnostic. A hardness, streak, acid, and specific-gravity test would greatly improve identification.

Field identification & locations

Common serpentine localities include California, Italy, New Zealand, and the Ural Mountains; chrysoprase occurs notably in Australia, Poland, and the United States. Test hardness on an inconspicuous area and avoid acid until identified.