gemstone

Faceted yellow-brown gemstone ring, likely citrine

Citrine (iron-bearing quartz, SiO₂); identification from the photo is uncertain

AI-generated identification · may be incorrect

The rectangular faceted stone appears yellow to brown with vitreous luster. If citrine, it has Mohs hardness 7 and a trigonal crystal structure; the metal setting obscures diagnostic features.

Identified September 26, 2026More gemstone →

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Physical properties

The rectangular faceted stone appears yellow to brown with vitreous luster. If citrine, it has Mohs hardness 7 and a trigonal crystal structure; the metal setting obscures diagnostic features.

Formation & geological history

Natural citrine forms when trace iron colors quartz in silica-rich geological environments; much commercial citrine is heat-treated amethyst. The photo cannot establish whether this stone is natural, treated, or another gem.

Uses & applications

Set in jewelry; quartz is also used in glassmaking and electronics.

Geological facts

Citrine is the yellow-to-orange variety of quartz, but similarly colored stones and glass can be difficult to distinguish visually.

Field identification & locations

The image shows a cut gemstone in a ring, not enough for a reliable species identification; gemological testing can confirm identity and treatments. Quartz occurs worldwide, including Brazil, Madagascar, and the United States.