gemstone

Faceted diamond gemstone (likely)

Diamond — crystalline carbon, C

AI-generated identification · may be incorrect

Likely colorless to near-colorless, brilliant-cut and transparent, with adamantine luster; Mohs hardness 10, cubic crystal structure, no visible cleavage in the cut stone. The tiny size and image resolution prevent reliable grading or separation from other colorless gems such as cubic zirconia or moissanite.

Identified August 28, 2026More gemstone →

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Physical properties

Formation & geological history

Natural diamonds crystallize deep in the mantle at roughly 1–3 billion years old and reach the surface in kimberlite or lamproite eruptions; laboratory-grown diamonds form by HPHT or CVD methods. This specimen is visibly faceted and human-processed.

Uses & applications

Used primarily in jewelry and abrasives; value depends strongly on carat weight, cut, color, clarity, certification, and whether it is natural or laboratory-grown.

Geological facts

Diamond is the hardest known natural mineral, though hardness varies by crystal direction. A loupe, thermal/electrical tester, refractive-index testing, and professional grading report are needed for confident identification.

Field identification & locations

Common source regions include Botswana, South Africa, Canada, Russia, and Australia. Confirm identity with a gemologist rather than relying on appearance; inspect facet sharpness, inclusions, and fluorescence.