mineral

Weathered greenish mineral specimen, possibly serpentine or epidote

Tentatively serpentine-group mineral (Mg3Si2O5(OH)4) or epidote (Ca2(Al,Fe)3Si3O12(OH)); identification is uncertain from the image alone

AI-generated identification · may be incorrect

Pale green to yellow-green, translucent to opaque, with earthy-to-waxy luster and irregular fracture; likely Mohs hardness about 2.5–6, depending on mineral. The rounded surface appears naturally weathered or partially polished, with no clear crystal form.

Identified August 25, 2026More mineral →

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At a glance

Common name: Weathered greenish mineral specimen, possibly serpentine or epidote
Scientific name: Tentatively serpentine-group mineral (Mg3Si2O5(OH)4) or epidote (Ca2(Al,Fe)3Si3O12(OH)); identification is uncertain from the image alone
Category: mineral
Identified: August 25, 2026
Method: Standard

AI Estimated Value

Approximately $1–$20 for a small common specimen; $25–$100+ if confirmed as attractive gem-quality epidote or polished serpentine.

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, while epidote forms during low- to medium-grade metamorphism or hydrothermal alteration. Both commonly occur in geologically young and ancient metamorphic terrains.

Uses & applications

Serpentine is used decoratively, in carvings, and occasionally as dimension stone; epidote is mainly a collector mineral and sometimes a gemstone. Value is generally modest unless the material is exceptionally attractive or transparent.

Geological facts

Green alteration minerals can be difficult to distinguish visually; hardness, streak, density, and reaction to acid are useful tests. A confirmed identification may require a scratch test, loupe examination, or laboratory analysis.

Field identification & locations

Commonly found in metamorphic belts, serpentinites, hydrothermal veins, and altered mafic or ultramafic rocks worldwide. Avoid relying on color alone; test hardness and inspect for fibrous texture or distinct epidote crystals.