Rock Identifier
Red gemstone ring (likely synthetic ruby or red glass) (Possibly corundum (Al₂O₃), chromium-colored; identity cannot be confirmed from the image) — gemstone
gemstone

Red gemstone ring (likely synthetic ruby or red glass)

Possibly corundum (Al₂O₃), chromium-colored; identity cannot be confirmed from the image

AI-generated identification · may be incorrect

Large faceted, transparent-to-translucent red stone in a gold-colored setting. Ruby has Mohs hardness 9 and a trigonal crystal structure; glass is softer (about 5–6) and may show bubbles or rounded wear. The photo alone cannot establish the stone’s material or quality.

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Physical properties

Large faceted, transparent-to-translucent red stone in a gold-colored setting. Ruby has Mohs hardness 9 and a trigonal crystal structure; glass is softer (about 5–6) and may show bubbles or rounded wear. The photo alone cannot establish the stone’s material or quality.

Formation & geological history

Natural ruby forms in metamorphic rocks or certain igneous deposits over geologic time; synthetic ruby is lab-grown, while glass is manufactured. The ring’s stone requires gemological testing to distinguish these possibilities.

Uses & applications

Jewelry; ruby is also used in precision and laser applications, while glass simulants are primarily decorative.

Geological facts

Red color in ruby is typically caused by chromium; treatments and synthetic stones are common in the jewelry trade.

Field identification & locations

A jeweler or gemologist can test refractive index, inclusions, and hardness without relying on appearance alone. Natural ruby occurs notably in Myanmar, Mozambique, Thailand, and Sri Lanka.