gemstone

Red faceted gemstone, likely synthetic ruby

Corundum (Al₂O₃), chromium-colored; possibly flame-fusion synthetic ruby

AI-generated identification · may be incorrect

Vivid red, transparent, glassy luster, faceted; corundum has trigonal crystal structure and Mohs hardness 9. The image alone cannot confirm whether this is ruby, another red gem, or glass imitation.

Identified September 29, 2026More gemstone →

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At a glance

Common name: Red faceted gemstone, likely synthetic ruby
Scientific name: Corundum (Al₂O₃), chromium-colored; possibly flame-fusion synthetic ruby
Category: gemstone
Identified: September 29, 2026
Method: Standard

AI Estimated Value

From a few dollars for glass or common synthetic stones to hundreds or more for fine natural ruby; reliable valuation requires identification, weight, treatment, and origin.

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

Vivid red, transparent, glassy luster, faceted; corundum has trigonal crystal structure and Mohs hardness 9. The image alone cannot confirm whether this is ruby, another red gem, or glass imitation.

Formation & geological history

Natural ruby forms when aluminum-rich rocks undergo metamorphism or crystallize in certain igneous settings; ruby deposits range from ancient to geologically recent. Bright, uniformly colored faceted stones are also commonly lab-grown.

Uses & applications

Used in jewelry and, as synthetic corundum, in watch components, lasers, and other technical applications.

Geological facts

Ruby is the red variety of corundum; chromium produces its red color. A gemstone’s identity and natural or synthetic origin require testing beyond appearance.

Field identification & locations

The object appears to be a cut red gemstone, but visual identification is uncertain; hardness, refractive index, inclusions, and spectroscopy help distinguish ruby from imitations. Natural rubies occur in Myanmar, Mozambique, Thailand, Sri Lanka, and elsewhere.