An 18k yellow and white gold Roberto Coin "Oro Classic" diamond necklace. The necklace features yellow gold oval links that alternate with five white gold diamond set links. Each white gold link is pave set with 16 round diamonds. The 80 diamonds have a total carat weight of .64 and a color and clarity grade of GH/SI. The necklace is 17.5" in length and completed with a lobster clasp and the signature Roberto Coin ruby. Marked "RC""18Kt ITALY".