mineral

Likely tumbled green mineral (possibly serpentine or aventurine)

Indeterminate; possibilities include serpentine-group minerals, nephrite, or green aventurine quartz

AI-generated identification · may be incorrect

Smooth, rounded, opaque pale green surface with a waxy to dull luster; the image is too blurred to assess grains, cleavage, or crystal structure. Estimated hardness is roughly 2.5–7, depending on identity; a scratch test is needed.

Identified August 15, 2026More mineral →

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At a glance

Common name: Likely tumbled green mineral (possibly serpentine or aventurine)
Scientific name: Indeterminate; possibilities include serpentine-group minerals, nephrite, or green aventurine quartz
Category: mineral
Identified: August 15, 2026
Method: Standard

AI Estimated Value

About $1–$10 for a common tumbled stone; $20–$100+ if confirmed as attractive nephrite or quality aventurine.

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

Green serpentine forms by hydrothermal alteration of ultramafic rocks; nephrite forms in metamorphic zones; aventurine is quartzite containing fuchsite mica. These materials range from Precambrian to much younger geological ages.

Uses & applications

Commonly sold as tumbled stones, carvings, beads, and decorative pieces; nephrite and high-quality aventurine can have jewelry value, while common serpentine is inexpensive.

Geological facts

The specimen appears human-tumbled or polished rather than naturally weathered. Its uniform green color is compatible with several materials, and the photograph does not support a confident species-level identification.

Field identification & locations

Near 19.1°N, 72.9°E, weathered basalt, laterite, and imported decorative stones are more plausible than a rare gem deposit. Check streak, hardness, translucency, and a close-focus image: quartz-rich aventurine scratches glass, nephrite is tough and waxy, while serpentine is softer and is often scratched by a steel blade.