Rock Identifier
Ruby ring (likely synthetic ruby) (Corundum, Al₂O₃; red color from chromium. The image alone cannot establish whether the stone is natural or lab-grown.) — gemstone
gemstone

Ruby ring (likely synthetic ruby)

Corundum, Al₂O₃; red color from chromium. The image alone cannot establish whether the stone is natural or lab-grown.

AI-generated identification · may be incorrect

Red, transparent-to-translucent faceted cabochon with vitreous luster; corundum has trigonal crystal structure and Mohs hardness 9. The ring setting appears to be silver-colored metal.

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Physical properties

Red, transparent-to-translucent faceted cabochon with vitreous luster; corundum has trigonal crystal structure and Mohs hardness 9. The ring setting appears to be silver-colored metal.

Formation & geological history

Natural ruby forms under high-grade metamorphic conditions or in some igneous-related deposits over geological time; synthetic ruby is produced in laboratories. No age or origin can be determined from the image.

Uses & applications

Ruby is used in jewelry and, because of its hardness, in some specialized industrial applications.

Geological facts

Ruby and sapphire are both varieties of corundum; red color distinguishes ruby from other gem-quality corundum.

Field identification & locations

A ruby is identified by its red color and hardness, but confirming natural origin, treatments, and identity requires gemological testing. Natural deposits occur in Myanmar, Mozambique, Thailand, and elsewhere.