mineral

Polished green aventurine (likely serpentine or nephrite imitation)

Aventurine quartz, SiO₂, if genuine; visually also consistent with serpentine, Mg₃Si₂O₅(OH)₄

AI-generated identification · may be incorrect

Pale mint-green, opaque to slightly translucent, vitreous-to-waxy luster, smoothly faceted and polished; aventurine quartz has Mohs hardness 6.5–7, while serpentine is softer at 2.5–5.5. No visible sparkle or diagnostic crystal structure is apparent.

Identified September 16, 2026More mineral →

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At a glance

Common name: Polished green aventurine (likely serpentine or nephrite imitation)
Scientific name: Aventurine quartz, SiO₂, if genuine; visually also consistent with serpentine, Mg₃Si₂O₅(OH)₄
Category: mineral
Identified: September 16, 2026
Method: Standard

AI Estimated Value

Approximately $5–$25 for a common polished piece; $30–$100+ if confirmed high-quality jade or fine aventurine.

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

Green aventurine forms when chromium-bearing mica or fuchsite occurs in quartz during metamorphic or hydrothermal processes; serpentine forms by hydration of ultramafic rocks. Geological ages vary widely by deposit.

Uses & applications

Used for carvings, beads, cabochons, ornamental objects, and inexpensive jewelry; this appears to be a polished pendant or carving.

Geological facts

The image alone cannot reliably distinguish aventurine from similarly colored serpentine, jade, dyed quartz, or glass. Strong glitter suggests aventurine; waxy appearance and lower hardness suggest serpentine.

Field identification & locations

Common sources include India, Brazil, Russia, China, and Zimbabwe. Test cautiously with hardness, streak, magnification, and specific gravity; avoid scratching valuable material.