gemstone

Yellow cabochon gemstone, likely citrine or yellow glass imitation

Quartz (SiO₂), if natural citrine; visual evidence is insufficient to exclude man-made glass or resin

AI-generated identification · may be incorrect

Transparent to translucent yellow, vitreous luster, smoothly polished domed cabochon with no visible crystal faces. Citrine has Mohs hardness 7, while glass is about 5–6 and resin is softer; bubbles or flow lines would suggest an imitation.

Identified September 18, 2026More gemstone →

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At a glance

Common name: Yellow cabochon gemstone, likely citrine or yellow glass imitation
Scientific name: Quartz (SiO₂), if natural citrine; visual evidence is insufficient to exclude man-made glass or resin
Category: gemstone
Identified: September 18, 2026
Method: Standard

AI Estimated Value

About $5–$30 if common citrine or an imitation; roughly $30–$150 for attractive verified natural citrine of this size and clarity.

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

Natural citrine forms when iron-bearing quartz is heated geologically, commonly in hydrothermal veins and granitic pegmatites; most commercial yellow quartz is heat-treated amethyst. The pictured polished material has no determinable geological age.

Uses & applications

Used in jewelry, cabochons, ornaments, and collections; if glass or resin, it has primarily decorative value.

Geological facts

The strong rounded shape and uniform color are typical of a polished cabochon, but color alone cannot reliably identify citrine. A refractive-index or hardness test is needed for confirmation.

Field identification & locations

Common citrine sources include Brazil, Uruguay, Madagascar, Zambia, and Spain. Check for internal bubbles, scratches from steel, and quartz-like hardness; definitive testing requires refractive index or gemological examination.