gemstone

Polished yellow-orange stone pendant, possibly carnelian or yellow chalcedony

Chalcedony, microcrystalline quartz (SiO₂); identification from the photo is uncertain

AI-generated identification · may be incorrect

Opaque to translucent golden-orange, smooth polish, waxy to vitreous luster; quartz crystal structure, no visible cleavage, Mohs hardness about 6.5–7, specific gravity about 2.6. The pendant’s color and appearance are consistent with chalcedony but are not diagnostic.

Identified October 2, 2026More gemstone →

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At a glance

Common name: Polished yellow-orange stone pendant, possibly carnelian or yellow chalcedony
Scientific name: Chalcedony, microcrystalline quartz (SiO₂); identification from the photo is uncertain
Category: gemstone
Identified: October 2, 2026
Method: Standard

AI Estimated Value

Approximately $5–$30 for a simple polished pendant, depending on material, workmanship, and setting.

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

Chalcedony forms when silica-rich fluids deposit microscopic quartz in cavities and fractures, commonly in volcanic rocks; deposits range from ancient to geologically recent. The stone has been shaped and polished for jewelry.

Uses & applications

Used for pendants, beads, carvings, and ornamental objects; this example is mounted as a necklace.

Geological facts

Carnelian is an orange-red variety of chalcedony, while yellow chalcedony is often sold as citrine chalcedony or yellow agate; trade names can be imprecise.

Field identification & locations

Look for a smooth, glassy-to-waxy surface and hardness sufficient to scratch glass; gemological testing is needed to distinguish chalcedony from dyed stone or other materials. Chalcedony occurs worldwide, including Brazil, India, Madagascar, and the United States.