metamorphic

Serpentine-rich rock (possibly lizardite/serpentinite)

Serpentinite, composed chiefly of serpentine-group minerals such as lizardite, antigorite, or chrysotile

AI-generated identification · may be incorrect

The small specimen appears pale green with dark patches and a dull to waxy surface; exact hardness and mineral composition cannot be confirmed from the image. Serpentine minerals typically have Mohs hardness of 2.5–5 and form fine-grained, often massive aggregates.

Identified September 26, 2026More metamorphic →

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At a glance

Common name: Serpentine-rich rock (possibly lizardite/serpentinite)
Scientific name: Serpentinite, composed chiefly of serpentine-group minerals such as lizardite, antigorite, or chrysotile
Category: metamorphic
Identified: September 26, 2026
Method: Standard

AI Estimated Value

About $1–$10 for a small, common unverified fragment; locality and quality may change the value.

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

Forms when water alters magnesium-rich ultramafic rocks, commonly in oceanic crust and along tectonic plate boundaries; the specimen’s age and locality are unknown.

Uses & applications

Serpentinite is used as decorative stone, carving material, and a source of some industrial minerals; attractive pieces may be collected or polished.

Geological facts

The name refers to its often snake-like colors and patterns. Chrysotile, one serpentine mineral, is an asbestos form and should not be cut or ground without identifying it.

Field identification & locations

A green color with dark veining and a smooth, waxy feel can suggest serpentinite, but the photo is insufficient for reliable identification; a hardness or mineral test would help. Serpentinite occurs worldwide in mountain belts and altered oceanic rocks.