gemstone

Red cabochon ring, likely ruby or synthetic ruby

Corundum (Al₂O₃), possibly chromium-bearing ruby; the image cannot establish whether it is natural or synthetic

AI-generated identification · may be incorrect

The smooth, domed red stone has a glassy luster and appears mounted in a gold-colored setting. Ruby has Mohs hardness 9 and a trigonal crystal structure; the setting and lighting obscure diagnostic features.

Identified October 2, 2026More gemstone →

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At a glance

Common name: Red cabochon ring, likely ruby or synthetic ruby
Scientific name: Corundum (Al₂O₃), possibly chromium-bearing ruby; the image cannot establish whether it is natural or synthetic
Category: gemstone
Identified: October 2, 2026
Method: Standard

AI Estimated Value

About $5–$100 if imitation or synthetic in a costume setting; potentially hundreds or more if confirmed natural ruby and precious-metal mount.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Natural ruby forms in metamorphic rocks or some igneous-related deposits, with geological ages varying by locality. The ring’s stone may instead be synthetic; the photograph does not reveal its origin.

Uses & applications

Rubies are used in jewelry and, because of their hardness, some industrial applications; this example is set as a ring.

Geological facts

Ruby is the red variety of corundum, colored mainly by chromium. Color and appearance alone cannot distinguish natural ruby from synthetic ruby or red imitations.

Field identification & locations

A gemological examination is needed to identify the stone and assess naturalness, treatments, and quality. The gold-colored mount is not sufficient to determine metal content.