gemstone

Yellow faceted gemstone, likely citrine or synthetic glass

Citrine (quartz, SiO₂) is the leading natural possibility; visual identification is uncertain from the photograph

AI-generated identification · may be incorrect

Transparent yellow material with rounded/faceted cutting and vitreous luster; quartz has Mohs hardness 7, hexagonal crystal structure, no cleavage, and specific gravity about 2.65. The strongly vivid color and apparent bubbles may instead indicate colored glass or synthetic material.

Identified September 13, 2026More gemstone →

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At a glance

Common name: Yellow faceted gemstone, likely citrine or synthetic glass
Scientific name: Citrine (quartz, SiO₂) is the leading natural possibility; visual identification is uncertain from the photograph
Category: gemstone
Identified: September 13, 2026
Method: Standard

AI Estimated Value

If natural citrine: about $10–$100 for a small commercial stone, potentially more if exceptional; if colored glass: under $5.

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 or irradiated, commonly in hydrothermal veins and granitic pegmatites; quartz is geologically widespread and ranges from Precambrian to recent. Glass is human-made and has no geological age.

Uses & applications

Citrine is used in jewelry and mineral collecting; quartz is also important industrially. If glass, it has decorative value only and is not a geological specimen.

Geological facts

A loupe may reveal curved internal fractures or bubbles, which suggest glass; natural quartz typically shows crystal inclusions and angular fracture patterns. Refractive-index and hardness testing are needed for confirmation.

Field identification & locations

Common natural sources include Brazil, Madagascar, Zambia, and Uruguay. Test cautiously with a quartz point or refractometer; avoid scratching the item, and check for bubbles, facet quality, and uniform color.