Rock Identifier
Red gemstone ring, likely synthetic ruby or red glass; exact stone cannot be confirmed from the image (Ruby (corundum, Al₂O₃) if natural; the setting appears to be silver-tone metal) — gemstone
gemstone

Red gemstone ring, likely synthetic ruby or red glass; exact stone cannot be confirmed from the image

Ruby (corundum, Al₂O₃) if natural; the setting appears to be silver-tone metal

AI-generated identification · may be incorrect

The oval, faceted stone is saturated red with a glassy luster. Ruby has Mohs hardness 9 and a trigonal crystal structure; visual appearance alone cannot distinguish it from synthetic corundum, garnet, or glass.

Identified More gemstone →
Explore Red gemstone ring, likely synthetic ruby or red glass; exact stone cannot be confirmed from the image in the encyclopedia →

Identify your own rocks.

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

Physical properties

The oval, faceted stone is saturated red with a glassy luster. Ruby has Mohs hardness 9 and a trigonal crystal structure; visual appearance alone cannot distinguish it from synthetic corundum, garnet, or glass.

Formation & geological history

Natural ruby forms in metamorphic rocks or, less commonly, igneous deposits over geological time; synthetic ruby is lab-grown. The image does not establish the stone’s identity or age.

Uses & applications

Jewelry; ruby is also used in precision components and lasers, while synthetic ruby is common in jewelry.

Geological facts

Ruby is the red variety of corundum, colored mainly by chromium. Gem identification typically requires testing beyond photographs.

Field identification & locations

Have a jeweler or gemologist check hardness, inclusions, and refractive properties; a photo cannot reliably identify the stone or its origin.