
Blue-stone ring, likely set with blue glass or a dark-blue gemstone
The stone cannot be identified reliably from the image; possible sapphire (corundum, Al₂O₃), lapis lazuli, or glass
AI-generated identification · may be incorrectA faceted, very dark-blue cabochon or stone is mounted in a silver-colored metal setting. Hardness, luster, and crystal structure cannot be determined from the photograph.
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Physical properties
Formation & geological history
Uses & applications
Geological facts
Field identification & locations
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