metamorphic

Pistachio-green and dark mineral-bearing rock, possibly serpentine with dark inclusions

Undetermined; the image is insufficient for reliable species-level identification

AI-generated identification · may be incorrect

Rough, irregular specimen with pale green and charcoal-colored patches. Hardness, luster, crystal structure, cleavage, and specific gravity cannot be determined reliably from the image; the green areas may be serpentine-group minerals, but visual appearance alone is not diagnostic.

Identified September 23, 2026More metamorphic →

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At a glance

Common name: Pistachio-green and dark mineral-bearing rock, possibly serpentine with dark inclusions
Scientific name: Undetermined; the image is insufficient for reliable species-level identification
Category: metamorphic
Identified: September 23, 2026
Method: Standard

AI Estimated Value

Approximately $1–$20 for a small, unidentified common specimen; more precise valuation requires identification, size, and condition.

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

If serpentine-bearing, it likely formed by hydration and alteration of ultramafic rock during metamorphism; its geological age and exact formation environment are unknown.

Uses & applications

Serpentinite is used as decorative stone, carving material, and sometimes dimension stone; this specimen’s suitability or value cannot be established from the image.

Geological facts

Green and black mottling occurs in many unrelated rocks and minerals, so color alone cannot confirm serpentine or a particular rock type.

Field identification & locations

A fresh surface, hardness and streak tests, and mineralogical analysis would help identify it; serpentinite is commonly associated with ultramafic-rock belts and ophiolites worldwide.