gemstone

Green glassy mineral fragment, likely peridot or green fluorite

Possibly olivine (forsterite–fayalite series), Mg₂SiO₄, or fluorite, CaF₂; exact identification requires testing

AI-generated identification · may be incorrect

Bright translucent green, vitreous luster, irregular/conchoidal-looking break, and apparent cleavage or internal fractures. Peridot has Mohs hardness 6.5–7; fluorite is softer at 4 and commonly shows cubic cleavage.

Identified September 11, 2026More gemstone →

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At a glance

Common name: Green glassy mineral fragment, likely peridot or green fluorite
Scientific name: Possibly olivine (forsterite–fayalite series), Mg₂SiO₄, or fluorite, CaF₂; exact identification requires testing
Category: gemstone
Identified: September 11, 2026
Method: Standard

AI Estimated Value

About $1–$20 as an unidentified fragment; approximately $20–$200+ if confirmed as attractive gem-quality peridot, depending on clarity, size, and cut.

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

Peridot forms in magnesium-rich igneous rocks and mantle-derived basalts; fluorite forms in hydrothermal veins. The image alone cannot establish geological age or origin.

Uses & applications

Gem-quality peridot is faceted for jewelry; fluorite is mainly a collector mineral and industrial flux. Small fragments have modest decorative value.

Geological facts

The vivid green color and transparent, glossy appearance are consistent with peridot, but the rough edges and possible cleavage could also indicate fluorite or even colored glass.

Field identification & locations

Common peridot localities include Arizona, Pakistan, Myanmar, and China; fluorite occurs worldwide, notably in China, Mexico, and the United Kingdom. Check hardness, cleavage, refractive behavior, and specific gravity; a gemological test is needed for confirmation.