Uneek Precious Collection Double-Halo Oval Blue Sapphire Engagement RingPut an elaborate spin on the already regal royal blue sapphire with a dazzling double halo of diamonds; the halos are actually staggered, with the inner halo carrying smaller rounds sitting a bit higher than the outer halo which carries slightly larger rounds; more diamonds line the upper shank (which splits in two before touching the head); from Uneek's Royal Blue Collection.