gemstone

Faceted yellow gemstone (possibly citrine or synthetic glass)

Undetermined; citrine is yellow quartz (SiO₂), but the image cannot confirm the material

AI-generated identification · may be incorrect

Bright lemon-yellow, transparent, round brilliant cut with vitreous-looking luster. If citrine, hardness is 7 Mohs and the crystal structure is trigonal; color and cut alone are not diagnostic.

Identified October 7, 2026More gemstone →

Explore Faceted yellow gemstone (possibly citrine or synthetic glass) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Bright lemon-yellow, transparent, round brilliant cut with vitreous-looking luster. If citrine, hardness is 7 Mohs and the crystal structure is trigonal; color and cut alone are not diagnostic.

Formation & geological history

Natural citrine forms when trace iron colors quartz in silica-rich geological environments; gem material may also be heat-treated amethyst or synthetic. Age and natural origin cannot be determined from the photo.

Uses & applications

Faceted for jewelry and collecting; imitation glass or synthetic stones are also used in costume jewelry.

Geological facts

A vivid yellow color does not establish that a stone is citrine—similar-looking gems include yellow sapphire, beryl, and glass.

Field identification & locations

Identification requires tests such as refractive index, hardness, and specific gravity, ideally by a gemologist. Common citrine sources include Brazil, Madagascar, and Zambia.