mineral

Tumbled pale green stone, likely serpentine or green aventurine

Serpentine-group minerals (Mg₃Si₂O₅(OH)₄) or quartz-rich aventurine; exact identification requires testing

AI-generated identification · may be incorrect

Smooth, rounded, pale green, opaque to slightly translucent, with a dull-to-waxy luster. Likely hardness is about Mohs 2.5–4 for serpentine or 6.5–7 for aventurine; no visible crystal faces or cleavage.

Identified September 10, 2026More mineral →

Explore Tumbled pale green stone, likely serpentine or green aventurine in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

At a glance

Common name: Tumbled pale green stone, likely serpentine or green aventurine
Scientific name: Serpentine-group minerals (Mg₃Si₂O₅(OH)₄) or quartz-rich aventurine; exact identification requires testing
Category: mineral
Identified: September 10, 2026
Method: Standard

AI Estimated Value

Typically $1–$10 for a common tumbled stone; approximately $10–$40 for a larger, attractive, verified 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

A tumbled and polished natural specimen. Serpentine forms when magnesium-rich ultramafic rocks undergo hydrothermal alteration; green aventurine forms in silica-rich veins, generally during much younger hydrothermal processes than its host rock.

Uses & applications

Commonly sold as a decorative or metaphysical tumbled stone; serpentine is also carved, while aventurine is used for beads, ornaments, and inexpensive jewelry.

Geological facts

The photograph alone cannot reliably distinguish serpentine from pale green quartzite, aventurine, or jade-like material. A steel scratch test, streak, specific gravity, and ideally Raman or X-ray analysis would resolve it.

Field identification & locations

Green serpentine is common in metamorphic belts worldwide, including California, Italy, New Zealand, and Canada; aventurine is common from India, Brazil, Russia, and Tanzania. Check hardness and translucency before calling it jade.