Wedding Ring Set with Emerald & DiamondsDescription 2 stacking unique wedding rings. When I thought about the marquise ring I imagined it to be set with emerald and diamonds but I wanted it to have an unusual look, this is why I set the emerald not in the middle but in the corner of the ring with a bit of a tilt. The wave curved ring was a perfect match for the marquise ring. The rings are made of 18k yellow gold with a matte finish. Ring 1: 18k wave shape recycled yellow gold Width: 1. 7mm