gemstone

Diamond ring

Diamond (crystalline carbon, C)

AI-generated identification · may be incorrect

Colorless, transparent gemstones with adamantine luster; cubic crystal structure, no visible cleavage in finished stones, Mohs hardness 10, specific gravity about 3.52. The surrounding band and setting appear to be polished metal, likely white gold or platinum.

Identified August 29, 2026More gemstone →

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Physical properties

Formation & geological history

Natural diamonds formed deep in Earth’s mantle under extreme pressure and temperature, commonly 1–3 billion years ago, then reached the surface in volcanic kimberlite or lamproite pipes. The image shows cut and faceted stones rather than a natural specimen, and origin cannot be confirmed visually.

Uses & applications

Used primarily in engagement and fine jewelry; industrial diamond is used for cutting, drilling, grinding, and polishing. Value depends heavily on carat weight, cut, color, clarity, certification, and whether stones are natural or laboratory-grown.

Geological facts

Diamond is the hardest natural mineral, though it can chip along cleavage planes. Faceting produces strong brilliance and fire through internal reflection and dispersion.

Field identification & locations

Identify by exceptional brilliance, sharp facet edges, high density, and resistance to scratching; reliable identification requires gemological testing because cubic zirconia and moissanite can look similar. Major sources include Botswana, Canada, Russia, Australia, and southern Africa.