gemstone

Pink/red faceted gemstone, likely synthetic corundum or glass imitation

Corundum (Al₂O₃), ruby/sapphire variety; exact identification requires testing

AI-generated identification · may be incorrect

Transparent pink-red, oval faceted cut, vitreous luster; corundum has Mohs hardness 9, trigonal crystals, no cleavage, and specific gravity about 4.0. The unusually vivid color and visible inclusions/curved internal patterns may indicate synthetic material or glass, which can be much softer.

Identified August 17, 2026More gemstone →

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At a glance

Common name: Pink/red faceted gemstone, likely synthetic corundum or glass imitation
Scientific name: Corundum (Al₂O₃), ruby/sapphire variety; exact identification requires testing
Category: gemstone
Identified: August 17, 2026
Method: Standard

AI Estimated Value

About $1–$20 if glass or common synthetic; $20–$200 for attractive synthetic corundum; natural ruby/pink sapphire can range from $100 to over $10,000 depending on treatment, clarity, size, 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

Formation & geological history

Natural corundum forms in aluminum-rich metamorphic rocks and certain igneous environments, commonly millions to billions of years old; synthetic stones are laboratory-grown. Major natural sources include Myanmar, Sri Lanka, Mozambique, Madagascar, and Tanzania.

Uses & applications

Used in jewelry when natural and durable; synthetic corundum is common in jewelry and abrasives. Glass simulants have mainly decorative value.

Geological facts

A ruby is red corundum, while pink-to-purple corundum is generally classified as pink sapphire; chromium commonly produces the red color. Faceting and photography alone cannot establish natural origin or value.

Field identification & locations

Check with a loupe for curved growth lines, bubbles, or lack of natural inclusions; refractive index, specific gravity, and hardness testing are needed for confirmation. Do not scratch it casually, as the item may be glass.