mineral

Tumbled pale-green stone, likely serpentine or green aventurine

Probably serpentine-group minerals, chiefly lizardite/antigorite; exact identification requires testing

AI-generated identification · may be incorrect

Opaque to faintly translucent, pale green, smooth and matte-to-waxy with weak banding; serpentine hardness is about 2.5–4 Mohs, while quartz-rich aventurine is about 7. No visible crystals or cleavage; specific gravity roughly 2.5–2.7.

Identified August 26, 2026More mineral →

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At a glance

Common name: Tumbled pale-green stone, likely serpentine or green aventurine
Scientific name: Probably serpentine-group minerals, chiefly lizardite/antigorite; exact identification requires testing
Category: mineral
Identified: August 26, 2026
Method: Standard

AI Estimated Value

About $2–$15 for a common tumbled stone; $20–$100+ if confirmed as high-quality jade or an unusual collectible specimen.

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 mantle rocks hydrothermally alter, commonly during tectonic processes; deposits range from Precambrian to modern geologic settings. Its rounded shape indicates human tumbling or natural abrasion.

Uses & applications

Used as an ornamental stone, carving material, lapidary cabochons, and inexpensive decorative specimens; some varieties are marketed as “new jade.”

Geological facts

The image alone cannot reliably distinguish serpentine from pale green aventurine, jade, chalcedony, or dyed stone. True jade is considerably tougher and typically denser.

Field identification & locations

Common in serpentinite belts worldwide, including California, Italy, New Zealand, China, and Canada. Check hardness, density, streak, and magnification; avoid acid or heat tests without care.