metamorphic

Green-tumbled stone, possibly epidote-bearing rock

Undetermined green silicate; possible epidote (Ca₂Al₂Fe³⁺(SiO₄)(Si₂O₇)O(OH)) in a rock matrix

AI-generated identification · may be incorrect

Small polished green specimen with mottled, reflective patches; hardness and crystal structure cannot be established from the image. Epidote is typically Mohs 6–7, vitreous, and monoclinic.

Identified September 26, 2026More metamorphic →

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At a glance

Common name: Green-tumbled stone, possibly epidote-bearing rock
Scientific name: Undetermined green silicate; possible epidote (Ca₂Al₂Fe³⁺(SiO₄)(Si₂O₇)O(OH)) in a rock matrix
Category: metamorphic
Identified: September 26, 2026
Method: Standard

AI Estimated Value

About $1–$10 for a small common tumbled stone; identification and quality could change the estimate.

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

Small polished green specimen with mottled, reflective patches; hardness and crystal structure cannot be established from the image. Epidote is typically Mohs 6–7, vitreous, and monoclinic.

Formation & geological history

The appearance is consistent with a natural geological material that has been tumbled or polished. If epidote-bearing, it likely formed during metamorphism or hydrothermal alteration; age and locality are unknown.

Uses & applications

Likely sold as a pocket stone or for mineral collecting; no specific industrial use can be assigned without identification.

Geological facts

Green color alone is not diagnostic, and several minerals and rocks can look similar when polished.

Field identification & locations

A close-up showing fresh surfaces, translucency, hardness, and locality would help distinguish epidote from alternatives such as serpentine or aventurine. Common epidote occurrences include metamorphic rocks and hydrothermal veins worldwide.