mineral

Green glassy mineral specimen, likely nephrite or serpentine

Indeterminate from image; possible nephrite jade (interlocking amphibole, chiefly Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂) or green serpentine (Mg₃Si₂O₅(OH)₄)

AI-generated identification · may be incorrect

Small irregular polished or naturally worn piece with deep mottled green color and waxy-to-glassy luster. Nephrite hardness is 6–6.5 Mohs; serpentine is softer at 2.5–5.5; both are typically massive and nontransparent.

Identified September 21, 2026More mineral →

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At a glance

Common name: Green glassy mineral specimen, likely nephrite or serpentine
Scientific name: Indeterminate from image; possible nephrite jade (interlocking amphibole, chiefly Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂) or green serpentine (Mg₃Si₂O₅(OH)₄)
Category: mineral
Identified: September 21, 2026
Method: Standard

AI Estimated Value

$1–$20 if common serpentine or glass; approximately $20–$200+ for verified small nephrite pieces, with exceptional jade worth far more.

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

Nephrite forms by metamorphism of ultramafic rocks, while serpentine forms through hydration of mantle-derived peridotite; ages vary widely by locality. The image alone cannot establish mineral identity or age.

Uses & applications

Potentially suitable for carving, cabochons, or collecting if confirmed as jade; serpentine is mainly ornamental stone and carving material. Value depends strongly on identity, translucency, color, and treatment.

Geological facts

The saturated green appearance may also represent aventurine, chrome chalcedony, dyed stone, or glass; visual identification is unreliable.

Field identification & locations

Check hardness, specific gravity, translucency, and fibers under magnification; a gemological refractive-index or Raman test is recommended. Common sources include British Columbia, Wyoming, New Zealand, China, and Russia.