Art Deco, 14ct gold, old-cut diamond ringThis ring is sold, sorry. See similar rings: Metal: gold rings Gems: diamond rings Type of ring: Art Deco rings An Unusual Diamond Ring. Setting stones into a band, without any collet or claws, is known as a rub over setting, and its one of the oldest, simplest, and safest ways of setting stones. Set with a quirky mix of antique diamonds, with a baguette diamond at its centre, this charming ring is super comfortable to wear, and incredibly versatile