mineral

Green glass cabochon or tumbled stone

Indeterminate; likely man-made glass, possibly aventurine glass rather than a natural mineral

AI-generated identification · may be incorrect

Small, rounded, polished green body with strong vitreous luster and internal reflective streaks; apparent hardness about 5–6 if glass, with no visible crystal faces or cleavage. The image is insufficient to confirm a natural geological material.

Identified August 26, 2026More mineral →

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At a glance

Common name: Green glass cabochon or tumbled stone
Scientific name: Indeterminate; likely man-made glass, possibly aventurine glass rather than a natural mineral
Category: mineral
Identified: August 26, 2026
Method: Standard

AI Estimated Value

$1–$10 if ordinary glass; approximately $5–$30 if a small aventurine or nephrite cabochon; higher value requires confirmed identity and 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

The smooth domed shape suggests a manufactured cabochon or decorative glass bead; natural green stones such as aventurine quartz or nephrite are alternative possibilities, but cannot be distinguished from this photograph. If aventurine quartz, it formed in silica-rich veins or metamorphic rocks; if glass, it has no geological age.

Uses & applications

Likely used as costume jewelry, a craft cabochon, or decorative object; natural aventurine could be used in carvings and inexpensive jewelry.

Geological facts

Bright internal flashes may indicate aventurine glass or included mica, while the perfectly smooth dome favors human processing. It is resting on fabric, not rock.

Field identification & locations

Check for bubbles, flow lines, uniform color, and a glass-like conchoidal fracture; a loupe, hardness test, and refractive-index test are needed. Natural aventurine usually shows granular quartz and mica sparkle rather than obvious bubbles.