Uneek Oval Blue Sapphire Ring Petals Collection Round Diamond Halo and Tapered ShankJazz up that petite, drama loving finger with this romantic bloom from Uneek's Royal Blue and Petals Collection, featuring a 2. 67 carat oval royal blue sapphire center embraced by an unabashedly feminine halo of 10 shared prong set round diamonds; 20 smaller rounds, graduating in size, line the tapered, delicate looking upper shank; this style can accommodate different center stone shapes cuts, available by special order.