Estate American Vivid halo diamond 18K engagement ring, circa 2000. This 18 karat yellow gold engagement ring by Vivid features a .44 carat round brilliant cut diamond center. The diamond has VS1 clarity and H color. This halo design ring has 44 round brilliant cut accent diamonds with a carat total weight of 0.66 carat. These diamonds have VS-SI clarity and G-H color. This halo engagement ring boasts 1.10 carats in total diamond weight, is marked VIVID, and is a size 6.5.