Lady's Art Deco Platinum 0.45ct Diamond Ring. Contains: 1 Round Brilliant Cut Natural Diamond. Weight Approx.: 0.45ct, Color: G, Clarity: VS2. 52 Round Brilliant Cut Natural Diamonds. Weight Approx.: 0.50cttw, Color: G-H, Clarity: VS1/VS2. This ring was an old standard during the gay 1890s. The center stone is cut in the age-old European manner. It would be a great engagement ring for a traditional kind of person. Hopefully Laura Bush is not the only one in the country.