gemstone

Red faceted gemstone, likely synthetic ruby

Corundum (Al₂O₃); ruby is red chromium-bearing corundum

AI-generated identification · may be incorrect

Deep red, transparent to translucent, vitreous luster, trigonal crystal structure, Mohs hardness 9, no true cleavage. The photo shows a cut stone; color and appearance alone cannot confirm natural versus synthetic ruby or identify treatments.

Identified September 29, 2026More gemstone →

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At a glance

Common name: Red faceted gemstone, likely synthetic ruby
Scientific name: Corundum (Al₂O₃); ruby is red chromium-bearing corundum
Category: gemstone
Identified: September 29, 2026
Method: Standard

AI Estimated Value

If synthetic or imitation: roughly $1–$50; natural ruby value varies enormously, from tens to thousands of dollars or more depending on verified identity, quality, treatment, and carat weight.

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 under high-grade metamorphic conditions or in certain igneous deposits; ruby deposits range from ancient to geologically recent. Synthetic rubies are laboratory-grown and chemically corundum.

Uses & applications

Used in jewelry and, especially when synthetic, in lasers, watch bearings, and industrial components.

Geological facts

Ruby is the red variety of corundum; chromium produces its characteristic color. Faceted appearance does not establish whether this stone is natural, synthetic, or imitation.

Field identification & locations

Check hardness, inclusions, and diagnostic optical properties with gemological tools; definitive identification and origin require testing. Natural sources include Myanmar, Mozambique, Thailand, and Sri Lanka.