gemstone

Diamond ring

Diamond, crystalline carbon (C)

AI-generated identification · may be incorrect

Likely a cut brilliant diamond: Mohs hardness 10, adamantine luster, cubic crystal structure, excellent transparency, and very high refractive index. The surrounding metal and setting are human-made, but the gemstone is geological material.

Identified August 14, 2026More gemstone →

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Physical properties

Formation & geological history

Natural diamonds crystallize deep in Earth’s mantle under extreme pressure and temperature, commonly 1–3 billion years ago, then reach the surface in kimberlite or lamproite volcanic pipes. The image cannot determine whether this stone is natural, laboratory-grown, or a simulant.

Uses & applications

Used primarily in jewelry and valued for brilliance, durability, and symbolism; industrial diamond is used for cutting, drilling, grinding, and polishing.

Geological facts

A diamond’s cut, color, clarity, and carat weight strongly control value. Visual inspection alone cannot reliably distinguish natural diamond from lab-grown diamond, cubic zirconia, or moissanite.

Field identification & locations

Identify genuine diamond with a professional loupe, thermal/electrical tester, and gemological report; avoid scratch tests that may damage the setting. Major sources include Botswana, Canada, Russia, Australia, and southern Africa.