Nothing like a shared-prong round diamond halo to make a center diamond look bigger than it actually is; the 0. 50-carat oval diamond that you see pictured here definitely looks a lot larger, thanks to the 9 round diamonds surrounding it; from Uneek's Signature Collection. Additional Information: 9 round diamonds weighing 0. 78 carats, and 1 oval diamond with a significant weight of 0. 51 carats.