
gemstone
Red/pink faceted gemstone, likely synthetic ruby or red glass
Corundum (Al₂O₃) if ruby; identity cannot be confirmed visually
AI-generated identification · may be incorrectOval faceted cabochon-like cut, vivid magenta-red color, transparent to translucent, vitreous luster. Ruby hardness is Mohs 9; glass is about 5–5.5. The apparent curved internal feature and unusually uniform color make synthetic ruby or glass plausible.
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Physical properties
Oval faceted cabochon-like cut, vivid magenta-red color, transparent to translucent, vitreous luster. Ruby hardness is Mohs 9; glass is about 5–5.5. The apparent curved internal feature and unusually uniform color make synthetic ruby or glass plausible.
Formation & geological history
Natural ruby forms in metamorphic rocks and some igneous-related deposits; synthetic ruby is laboratory-grown. The photographed cut does not establish geological age or natural origin.
Uses & applications
Ruby is used in jewelry and precision instruments; synthetic ruby is common in jewelry and laser components. Glass imitations have mainly decorative value.
Geological facts
Natural ruby commonly shows inclusions, color zoning, or distinctive fluorescence; a loupe, refractive-index test, and spectroscopy are needed for reliable identification.
Field identification & locations
At approximately 5.9°N, 116.1°E (Sabah, Borneo), corundum and ruby are possible but this image alone cannot distinguish them from common imitation materials. Check hardness, specific gravity, refractive index, and inclusions; do not scratch it if valuable.
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