metamorphic

Polished green jade-like stone (likely nephrite)

Nephrite, a compact tremolite–actinolite amphibole aggregate; identification from the image is provisional

AI-generated identification · may be incorrect

Opaque to slightly translucent, mottled dark green with a polished, waxy-to-greasy luster. Nephrite is Mohs 6–6.5, with interlocking fibrous crystals and very tough fracture; the specimen’s exact composition cannot be confirmed visually.

Identified September 28, 2026More metamorphic →

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At a glance

Common name: Polished green jade-like stone (likely nephrite)
Scientific name: Nephrite, a compact tremolite–actinolite amphibole aggregate; identification from the image is provisional
Category: metamorphic
Identified: September 28, 2026
Method: Standard

AI Estimated Value

About $5–$50 for a small, common polished pebble; more only if testing confirms jade and it has desirable quality.

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

Nephrite forms when magnesium-rich rocks are altered by fluids during metamorphism, commonly along contacts between serpentinite and other rocks. Such deposits occur across a broad range of geological ages.

Uses & applications

Used for carved ornaments, beads, jewelry, and decorative objects; quality depends on color, translucency, texture, and confirmed identity.

Geological facts

Nephrite and jadeite are distinct minerals both sold as jade. Their dense interlocking crystal structures make nephrite exceptionally resistant to breaking.

Field identification & locations

A smooth, tough, waxy-looking green surface is consistent with nephrite, but similar-looking serpentine and other stones are common; gemological testing is needed to distinguish them. Nephrite occurs in places including British Columbia, China, New Zealand, and Siberia.