gemstone

Cut colorless gemstone, likely diamond

Diamond (crystalline carbon, C)

AI-generated identification · may be incorrect

Transparent to near-colorless, brilliant adamantine luster, cubic crystal structure, Mohs hardness 10, no visible cleavage in the mounted/cut view; identification from the image is provisional because glass or cubic zirconia can look similar.

Identified August 20, 2026More gemstone →

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Physical properties

Formation & geological history

Natural diamonds crystallize deep in Earth’s mantle under extreme pressure and temperature, typically more than 1 billion years ago, then reach the surface in kimberlite or lamproite pipes; laboratory-grown diamonds form by HPHT or CVD methods.

Uses & applications

Used primarily in jewelry and as an industrial abrasive or cutting material. Value depends strongly on carat weight, color, clarity, cut, certification, and whether it is natural or laboratory-grown.

Geological facts

The apparent faceting and strong sparkle are consistent with a round brilliant-cut stone, but a photograph cannot establish diamond identity or origin.

Field identification & locations

Common sources include Botswana, Russia, Canada, Australia, and southern Africa. Confirm with a jeweler’s thermal/electrical tester, loupe examination, and an independent gemological report; avoid scratch testing.