gemstone

Beaded gemstone jewelry, likely carnelian and green aventurine

Carnelian: orange chalcedony (microcrystalline SiO₂); green aventurine: quartz with fuchsite or other inclusions (SiO₂)

AI-generated identification · may be incorrect

Polished, opaque orange and dark-green beads with vitreous to waxy luster; quartz hardness is about Mohs 7, with no visible cleavage and cryptocrystalline or granular structure. Black beads may be glass, onyx, or another material and cannot be identified confidently from the image.

Identified August 24, 2026More gemstone →

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At a glance

Common name: Beaded gemstone jewelry, likely carnelian and green aventurine
Scientific name: Carnelian: orange chalcedony (microcrystalline SiO₂); green aventurine: quartz with fuchsite or other inclusions (SiO₂)
Category: gemstone
Identified: August 24, 2026
Method: Standard

AI Estimated Value

Approximately $10-$60 for a common assembled strand; $50-$200+ if made from high-quality natural gemstones with valuable findings.

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

Carnelian forms when iron colors chalcedony in volcanic cavities or silica-rich sediments; aventurine forms in quartz veins and metamorphic or hydrothermal environments. These are ancient natural minerals later drilled, polished, and assembled into jewelry.

Uses & applications

Used for necklaces, bracelets, cabochons, carvings, and ornamental objects; modest commercial jewelry value, with higher prices for vivid, natural, well-matched stones.

Geological facts

Carnelian’s orange-red color commonly comes from iron oxides; heating can intensify it. Aventurine’s characteristic green color and subtle sparkle usually result from mica inclusions.

Field identification & locations

Identify quartz gemstones by their glassy/waxy luster, lack of cleavage, and resistance to scratching; a loupe may reveal aventurine sparkle or chalcedony’s uniform texture. Common sources include India, Brazil, Uruguay, Madagascar, and the United States.