gemstone

Mixed gemstone specimens

Likely pink sapphire or tourmaline, red garnet, blue sapphire, precious opal, and green tourmaline/emerald; exact identities cannot be confirmed from the collage

AI-generated identification · may be incorrect

Faceted and polished stones with vitreous to resinous luster; typical Mohs hardness ranges from 5.5–9. Sapphire is corundum (Al₂O₃), garnet is a silicate group, opal is hydrated silica (SiO₂·nH₂O), and emerald/green tourmaline are silicates.

Identified September 8, 2026More gemstone →

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At a glance

Common name: Mixed gemstone specimens
Scientific name: Likely pink sapphire or tourmaline, red garnet, blue sapphire, precious opal, and green tourmaline/emerald; exact identities cannot be confirmed from the collage
Category: gemstone
Identified: September 8, 2026
Method: Standard

AI Estimated Value

Approximately $20–$5,000+ per stone, depending strongly on confirmed identity, color, clarity, treatment, carat weight, and provenance.

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

These gemstones crystallized in igneous, metamorphic, or hydrothermal environments over widely varying geological ages; opal formed from silica-rich groundwater at relatively low temperatures.

Uses & applications

Used in jewelry, ornamental objects, and gem collecting; sapphire and garnet are also used as abrasives, while industrial synthetic corundum has cutting applications.

Geological facts

The lower-left stone displays play-of-color characteristic of precious opal. Color in these gems commonly results from trace elements such as chromium, iron, manganese, or vanadium.

Field identification & locations

Field identification requires testing hardness, refractive index, specific gravity, inclusions, and—especially for opal—play-of-color; visual identification from this image alone is uncertain. Common sources include Sri Lanka, Myanmar, Madagascar, Brazil, Ethiopia, Australia, and Colombia.