Petite Crescent Round Bloom Diamond Engagement Ring HT2551Tacori designed the HT2551 for a round diamond buyer who wants the cushion silhouette without sacrificing the brilliance of their stone. Three 18k yellow gold pav set diamond bands rise toward a cushion bloom in a cathedral setting carrying 1. 03 carats of G, VS accent diamonds, with Petite Crescent fabric lining the inner face. The kind of engagement ring that makes the proposal feel inevitable the moment it comes out of the box.