gemstone

Red cabochon gemstone ring; likely garnet

Possibly almandine garnet, Fe₃Al₂(SiO₄)₃; identification is uncertain from the image

AI-generated identification · may be incorrect

Deep red, translucent to opaque, polished oval cabochon with a vitreous luster; garnet hardness is 6.5–7.5 Mohs and its crystal system is isometric. The silver-colored setting obscures the stone’s diagnostic features.

Identified October 7, 2026More gemstone →

Explore Red cabochon gemstone ring; likely garnet in the encyclopedia →

Identify your own rocks.

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

App Store Google Play

Physical properties

Formation & geological history

If garnet, it formed through geological processes such as regional metamorphism or igneous activity; garnets occur in rocks of many ages. The image does not establish the stone’s identity or provenance.

Uses & applications

Set in jewelry; garnet is also used as an abrasive and, in some varieties, a collectible gemstone.

Geological facts

Red garnets are commonly used in rings, but glass and other red stones can look similar in a photograph.

Field identification & locations

The smooth, domed cut is a cabochon, not a reliable identification feature. Gemological testing—especially refractive index and spectroscopy—is needed to distinguish garnet from alternatives such as glass or ruby.