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Radiant Cut
A rectangular or sometimes square cut diamond with
step-cut
and scissor-cut on the crown and brilliant-cut on the pavilion.
Rhodium
Rhodium is a hard, protective metal
alloy
applied as a coating to
white gold
to prevent
tarnish
and give a white finish.
Rosé
A pink
overtone
on a pearl.
Rough Girdle (RG)
Irregular, pitted or granular
girdle
surface.