Radiant cut
A type of fancy shape diamond that resembles a square or rectangle shape with the corners cut off.

The change in direction of a ray of light as it enters the diamond or gemstone and is bounced from facet to facet.

Rhodium plating
White gold is typically rhodium plated when sold so that it resembles the white colour of platinum. With prolonged wear and acidic levels in skin, white gold may lose its rhodium plating and look slightly yellow in colour.

Refers to a diamond as it comes out of ground before it is cut and polished.

Rough girdle
A grainy or pitted girdle surface, often with nicks.

Round brilliant cut
See Brilliant Cut Diamond.

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