.81 Old European Cut Diamond Engagement Ring in Platinum. This dynamic Modern engagement ring features a .81 carat old European cut diamond and Round Brilliant accent diamonds finished in platinum. The glittering center diamond is nearly colorless, set in a bezel with fine milgrain details. Thirty-one (31) .015 carat Round Brilliant cut diamonds wreathe the center stone on the face and shoulders for added brilliance. All of the diamonds have an impressive clarity rating. These slightly brighter Round Brilliant accents are bead set in a vintage-inspired mounting.