gemstone

Pavé-set diamond ring

Diamond (crystalline carbon, C)

AI-generated identification · may be incorrect

The clear, faceted stones are consistent with diamonds, but the photo cannot confirm whether they are natural, lab-grown, or imitation stones. Diamond has Mohs hardness 10, a cubic crystal structure, and strong adamantine luster; the ring’s metal is not identifiable from the image.

Identified October 11, 2026More gemstone →

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Physical properties

Formation & geological history

Natural diamonds crystallize deep in the mantle under extreme pressure and temperature, commonly more than 1 billion years ago, and reach the surface in volcanic kimberlite or lamproite. Lab-grown diamonds are made by high-pressure/high-temperature or chemical-vapor-deposition processes.

Uses & applications

Diamonds are used in jewelry and industrial cutting and abrasives; this specimen appears to be a decorative ring.

Geological facts

A diamond’s hardness makes it exceptionally scratch-resistant, but it can still chip along cleavage planes. Small pavé stones are often difficult to authenticate visually.

Field identification & locations

Confirm identity with a jeweler or gemological laboratory; inspect for natural inclusions and use appropriate gem tests rather than relying on sparkle or a scratch test. Diamonds occur in deposits including Botswana, Russia, Canada, and South Africa.