gemstone

Ruby (set in a ring)

Corundum, Al₂O₃, colored red by chromium; the pictured stone may be synthetic or imitation, which cannot be confirmed from the photo.

AI-generated identification · may be incorrect

Red, transparent to translucent, vitreous luster; trigonal crystal structure; Mohs hardness 9, with no true cleavage. The setting and reflections obscure diagnostic inclusions and other details.

Identified October 1, 2026More gemstone →

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At a glance

Common name: Ruby (set in a ring)
Scientific name: Corundum, Al₂O₃, colored red by chromium; the pictured stone may be synthetic or imitation, which cannot be confirmed from the photo.
Category: gemstone
Identified: October 1, 2026
Method: Standard

AI Estimated Value

Approximately $5–$100 for an imitation or common synthetic-stone ring; natural ruby jewelry can range from hundreds to far more, depending on verified stone quality and metal.

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

Red, transparent to translucent, vitreous luster; trigonal crystal structure; Mohs hardness 9, with no true cleavage. The setting and reflections obscure diagnostic inclusions and other details.

Formation & geological history

Natural ruby forms in aluminum-rich, silica-poor metamorphic rocks or in some igneous deposits; its age depends on the deposit. A ring’s appearance alone cannot establish whether the stone is natural, treated, synthetic, or glass.

Uses & applications

Rubies are used in jewelry and, because of their hardness, in some industrial applications. This mounted stone is primarily an ornamental jewelry item.

Geological facts

Ruby and sapphire are both varieties of corundum; red color distinguishes ruby. Gem testing is needed to verify identity and treatments.

Field identification & locations

The image shows a faceted, oval red stone in a metal ring, but visual inspection cannot reliably distinguish ruby from garnet, synthetic corundum, or imitation. Rubies occur in several countries; the reported Tamil Nadu location does not establish the ring stone’s geological origin.