gemstone

Red faceted gemstone, likely synthetic ruby or red spinel

Ruby: corundum (Al₂O₃); spinel: MgAl₂O₄; visual identification alone is insufficient

AI-generated identification · may be incorrect

Small round brilliant-cut stone with vivid red color, vitreous luster, and strong facet reflections. Ruby has Mohs hardness 9 and uniaxial crystals; spinel has hardness 8 and cubic crystals; apparent inclusions and color cannot be reliably assessed here.

Identified September 10, 2026More gemstone →

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At a glance

Common name: Red faceted gemstone, likely synthetic ruby or red spinel
Scientific name: Ruby: corundum (Al₂O₃); spinel: MgAl₂O₄; visual identification alone is insufficient
Category: gemstone
Identified: September 10, 2026
Method: Standard

AI Estimated Value

Approximately $1-$20 if synthetic or glass; $20-$200 for common commercial natural stones; fine certified ruby or spinel may range from hundreds to many thousands of dollars.

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 in metamorphic or unusual igneous environments, commonly tens to hundreds of millions of years old; spinel forms in metamorphic rocks and alluvial deposits. Bright commercial stones are also frequently laboratory-grown or glass-filled.

Uses & applications

Used in jewelry and collected as a gemstone; synthetic ruby is also used in lasers, watches, and precision instruments.

Geological facts

Red ruby color is caused mainly by chromium, while spinel’s red color commonly results from chromium. Faceting, color, and the photograph do not establish natural origin.

Field identification & locations

Confirm with refractive index, specific gravity, loupe examination, and spectroscopy; a gemological laboratory is needed to distinguish ruby, spinel, garnet, and synthetic material. Common sources include Myanmar, Mozambique, Sri Lanka, Tanzania, and Vietnam.