gemstone

Faceted yellow gemstone, likely citrine

Citrine (quartz), SiO₂; possibly yellow sapphire or synthetic glass without testing

AI-generated identification · may be incorrect

Transparent golden-yellow, vitreous luster, faceted oval cuts, and no visible cleavage; citrine hardness is Mohs 7 and specific gravity about 2.65. The paired stones appear mounted or held in jewelry findings.

Identified August 13, 2026More gemstone →

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At a glance

Common name: Faceted yellow gemstone, likely citrine
Scientific name: Citrine (quartz), SiO₂; possibly yellow sapphire or synthetic glass without testing
Category: gemstone
Identified: August 13, 2026
Method: Standard

AI Estimated Value

About $10–$100 per stone for common citrine; $100–$1,000+ for fine natural citrine or confirmed yellow sapphire, depending on size and quality.

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 trace iron colors quartz in silica-rich igneous or hydrothermal environments, commonly in geologically young cavities and veins. Much commercial citrine is heat-treated amethyst, while yellow sapphire forms in corundum-bearing metamorphic or igneous rocks.

Uses & applications

Used in jewelry and ornamental cutting; citrine is generally affordable, whereas confirmed natural yellow sapphire can be valuable. The image alone cannot distinguish citrine, treated quartz, sapphire, or synthetic material.

Geological facts

Citrine is the yellow variety of quartz and is commonly confused with heat-treated amethyst. Strong internal color zoning, refractive behavior, and hardness testing help separate alternatives.

Field identification & locations

Likely identification requires refractive-index, specific-gravity, and microscopic examination; citrine commonly occurs in Brazil, Madagascar, Uruguay, and Zambia. Avoid relying on color alone.