Split Shank Round Diamond Engagement Ring NR534The NR534 pairs a cushion shaped diamond halo with a split shank in 18k white gold, where the band divides before the crown to frame the round brilliant center stone from below. The hand set 0. 45 carats of round brilliant diamonds across the halo and upper shank use a micro setting technique, keeping the metalwork minimal and the diamonds flush. The sort of engagement ring that feels right the moment it goes on.