mineral

Tumbled jade-like stone, likely serpentine or nephrite jade

Most likely serpentine (Mg₃Si₂O₅(OH)₄); visually similar to nephrite jade, a tremolite–actinolite amphibole

AI-generated identification · may be incorrect

Pale green, opaque to slightly translucent, smooth tumbled surface, waxy to vitreous luster; serpentine hardness 2.5–4 Mohs, nephrite 6–6.5, with no visible cleavage. Exact identification requires hardness, specific-gravity, or laboratory testing.

Identified September 8, 2026More mineral →

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At a glance

Common name: Tumbled jade-like stone, likely serpentine or nephrite jade
Scientific name: Most likely serpentine (Mg₃Si₂O₅(OH)₄); visually similar to nephrite jade, a tremolite–actinolite amphibole
Category: mineral
Identified: September 8, 2026
Method: Standard

AI Estimated Value

About $3–$20 for a common tumbled serpentine piece; approximately $20–$200+ for verified quality nephrite jade.

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 by hydrothermal alteration of ultramafic rocks; nephrite forms through metamorphism and fluid alteration in serpentinite-related environments. Specimen age depends on its source locality, commonly Paleozoic to Mesozoic or older.

Uses & applications

Used as a carving stone, ornamental material, cabochon, bead, and collectible; genuine high-quality nephrite has jewelry value, while common serpentine is inexpensive.

Geological facts

The pale, evenly colored appearance and rounded polish are consistent with serpentine, but image-only identification cannot reliably distinguish it from jade, bowenite, or dyed material.

Field identification & locations

Common sources include China, New Zealand, Canada, Russia, Afghanistan, and the United States. Check for unusually low hardness, density, and a waxy feel; professional refractive-index and spectroscopic tests confirm jade.