metamorphic

Polished green jasper cabochon (likely serpentine or nephrite imitation)

Jasper: microcrystalline quartz (SiO₂); green coloration may reflect chlorite, epidote, or iron minerals

AI-generated identification · may be incorrect

Opaque to slightly translucent, olive-green and brown mottling, waxy to vitreous polish, no visible crystals or cleavage; hardness approximately 6.5–7 if jasper, potentially 5–6 if serpentine. The smooth oval cabochon is human-cut and polished.

Identified September 10, 2026More metamorphic →

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At a glance

Common name: Polished green jasper cabochon (likely serpentine or nephrite imitation)
Scientific name: Jasper: microcrystalline quartz (SiO₂); green coloration may reflect chlorite, epidote, or iron minerals
Category: metamorphic
Identified: September 10, 2026
Method: Standard

AI Estimated Value

Approximately $5–$25 for a small polished cabochon; exceptional patterned or verified material may sell for $30–$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

Formation & geological history

Jasper forms when silica-rich fluids replace or cement volcanic or sedimentary material; green varieties commonly form through alteration involving chlorite or epidote. Exact geological age and locality cannot be determined from the photograph.

Uses & applications

Used for cabochons, beads, carvings, and ornamental objects; valued mainly for attractive pattern and polish rather than rarity.

Geological facts

The specimen may be marketed as green jasper, kambaba jasper, serpentine, or nephrite depending on its actual mineralogy; visual identification alone is unreliable.

Field identification & locations

Check streak, hardness, translucency, specific gravity, and magnification; quartz-rich jasper will resist a steel scratch, whereas serpentine generally will not. Common sources include India, South Africa, Madagascar, Australia, and the western United States.