gemstone

Red gemstone ring, likely synthetic ruby

Corundum (Al₂O₃), chromium-bearing; possibly lab-created ruby or red glass imitation

AI-generated identification · may be incorrect

The rectangular, faceted red stone is mounted in gold-colored metal. Ruby has Mohs hardness 9, vitreous luster, trigonal crystals, no cleavage, and typically vivid red color; the photo cannot confirm whether it is natural, synthetic, or an imitation.

Identified September 2, 2026More gemstone →

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At a glance

Common name: Red gemstone ring, likely synthetic ruby
Scientific name: Corundum (Al₂O₃), chromium-bearing; possibly lab-created ruby or red glass imitation
Category: gemstone
Identified: September 2, 2026
Method: Standard

AI Estimated Value

Approximately $30–$300 if synthetic or imitation; $200–$2,000+ for a genuine treated ruby ring, with fine natural rubies potentially far higher.

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 mainly in metamorphic rocks and some igneous-related deposits, with ages ranging from ancient Precambrian to younger geological periods. Synthetic ruby is produced industrially by crystal-growth methods.

Uses & applications

Used in jewelry, watch bearings, lasers, and precision instruments. A gold setting and transparent, well-cut stone increase jewelry appeal, but value depends heavily on testing, treatment, and metal purity.

Geological facts

A ruby is gem-quality red corundum; other colors of corundum are called sapphire. Large rectangular stones are commonly synthetic or treated in commercial jewelry.

Field identification & locations

Check with a loupe for curved growth lines or bubbles, and test hardness, refractive index, and inclusions professionally; metal hallmarking also helps. Rubies commonly occur in Myanmar, Mozambique, Sri Lanka, Thailand, and Vietnam.