metamorphic

Small polished green stone, possibly serpentine or greenstone

Likely serpentine-rich rock; exact identification is limited by the blurred image

AI-generated identification · may be incorrect

Rounded, smooth, dull-to-waxy green surface with dark mottling; likely Mohs hardness 2.5–5.5 and no visible crystals or cleavage. Specific gravity may be approximately 2.5–2.7.

Identified September 12, 2026More metamorphic →

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At a glance

Common name: Small polished green stone, possibly serpentine or greenstone
Scientific name: Likely serpentine-rich rock; exact identification is limited by the blurred image
Category: metamorphic
Identified: September 12, 2026
Method: Standard

AI Estimated Value

Approximately $2–$15 for a small common polished piece; higher-quality carved or jade-like material may sell for $20–$100+.

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

Rounded, smooth, dull-to-waxy green surface with dark mottling; likely Mohs hardness 2.5–5.5 and no visible crystals or cleavage. Specific gravity may be approximately 2.5–2.7.

Formation & geological history

Serpentine forms when ultramafic mantle rocks undergo hydration during metamorphism, commonly in tectonic plate boundaries; its age varies widely from Precambrian to modern tectonic settings.

Uses & applications

Used as a carving and ornamental stone, beads, cabochons, and decorative objects; low-grade material has limited commercial value.

Geological facts

Serpentine is a mineral-group name rather than one mineral, chiefly including lizardite, chrysotile, and antigorite. Greenstone is a broader informal term that can also describe altered basalt or jade-like material.

Field identification & locations

Look for a greasy or waxy feel, green color, dark veins, low hardness, and possible white streak; a steel knife may scratch softer serpentine. Common localities include California, Italy, New Zealand, Canada, and Afghanistan.