Rock Identifier
Oval faceted gemstone ring, likely diamond (Diamond (crystalline carbon, C), possibly a diamond simulant; identification requires testing) — gemstone
gemstone

Oval faceted gemstone ring, likely diamond

Diamond (crystalline carbon, C), possibly a diamond simulant; identification requires testing

AI-generated identification · may be incorrect

Colorless, transparent, brilliant faceted appearance with high luster; diamond hardness is Mohs 10 and specific gravity about 3.52. The yellow-gold setting and reflections obscure diagnostic details, so cubic zirconia or moissanite cannot be excluded visually.

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Physical properties

Colorless, transparent, brilliant faceted appearance with high luster; diamond hardness is Mohs 10 and specific gravity about 3.52. The yellow-gold setting and reflections obscure diagnostic details, so cubic zirconia or moissanite cannot be excluded visually.

Formation & geological history

Natural diamonds crystallize deep in Earth’s mantle under extreme pressure and temperature, generally over 1 billion years ago, then reach the surface in kimberlite or lamproite. Lab-grown diamonds form the same crystal chemically but over weeks to months.

Uses & applications

Used primarily in jewelry and abrasives; the ring’s gold setting adds value. Diamond simulants are decorative alternatives with lower cost.

Geological facts

A loupe can reveal inclusions, facet junctions, and possible laser inscriptions, but visual inspection alone is unreliable. Thermal/electrical conductivity testing or a gemological report is needed for confirmation.

Field identification & locations

Check for strong rainbow fire, sharp facet edges, and resistance to scratching, but do not scratch the stone or rely on fog tests. Common sources include Botswana, Canada, Australia, Russia, and southern Africa.