3 Carat Dangle Earrings w/ Marquis, Round & Oval Diamonds in Platinum3 Carat Dangle Earrings w Marquis, Round Oval Diamonds in Platinum. These mixed cut diamond earrings set with 3. 07 carats are a wonderful example of a simple platinum design that packs an impact. The post begins with a round brilliant bezel set diamond finished with a milgrain edge. The round brilliant is followed by a marquise cut diamond and cascades to a perfectly proportioned oval diamond. The three diamonds all feature a thin bezel with a