gemstone

Small polished cabochon, likely green/gray beryl or agate

Uncertain from image; possible beryl (Be₃Al₂Si₆O₁₈) or chalcedony (SiO₂)

AI-generated identification · may be incorrect

Small irregularly cut/polished stone with a pale green-gray translucent interior and whitish rim; vitreous to waxy luster. Hardness would be about 7.5–8 for beryl or 6.5–7 for chalcedony; crystal structure cannot be confirmed visually.

Identified September 12, 2026More gemstone →

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At a glance

Common name: Small polished cabochon, likely green/gray beryl or agate
Scientific name: Uncertain from image; possible beryl (Be₃Al₂Si₆O₁₈) or chalcedony (SiO₂)
Category: gemstone
Identified: September 12, 2026
Method: Standard

AI Estimated Value

Typically $1–$20 as an unidentified small specimen; potentially $20–$100+ if confirmed as attractive gem-quality beryl.

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 beryl, it formed in hydrothermal granite pegmatites, commonly during Precambrian–Phanerozoic magmatic activity; if chalcedony, it formed from silica-rich fluids filling cavities in volcanic rocks. The image cannot establish geological age or identity.

Uses & applications

Possible lapidary or jewelry material, though the rough shape and small size suggest a low-grade cut specimen or fragment.

Geological facts

The apparent pale rim may be host rock, matrix, or a cut edge rather than a natural mineral zoning feature. Reliable identification requires hardness, specific-gravity, refractive-index, or spectroscopy tests.

Field identification & locations

Common possibilities include beryl from pegmatites and chalcedony from volcanic cavities; inspect translucency, fracture, inclusions, and test streak/hardness without damaging it. A gemologist or mineral shop can identify it definitively.