gemstone

Diamond ring

Diamond (crystalline carbon, C)

AI-generated identification · may be incorrect

The small central stone appears colorless and faceted, with adamantine luster; diamond has Mohs hardness 10, cubic crystal structure, no cleavage visible at this scale, and specific gravity about 3.52. The ring setting appears to be gold-colored metal, possibly yellow gold or plated alloy.

Identified August 12, 2026More gemstone →

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Physical properties

Formation & geological history

Natural diamonds formed deep in Earth’s mantle under extreme pressure and temperature, mostly 1–3 billion years ago, then reached the surface in volcanic kimberlite or lamproite; laboratory-grown diamonds form by HPHT or CVD methods. The image cannot distinguish natural from lab-grown or confirm the stone’s identity.

Uses & applications

Used primarily in jewelry for symbolism, durability, and brilliance; diamond is also important industrially for cutting, drilling, grinding, and polishing.

Geological facts

A loupe, refractometer, thermal/electrical tester, and gemological grading report are needed for reliable identification and valuation. Visual appearance alone cannot establish diamond authenticity or quality.

Field identification & locations

Look for strong brilliance, sharp facet reflections, and resistance to scratching, but do not perform scratch tests on jewelry. Common natural sources include Botswana, Russia, Canada, Australia, and southern Africa.