1.50 Carat Diamond Pendant in Yellow Gold & Sterling Silver1. 50 Carat Diamond Pendant Necklace in Yellow Gold Sterling Silver. This darling modern necklace features a 1. 55 carats of round brilliant cut diamonds set in oxidized silver and 18 karat yellow gold with an 18 inch yellow gold chain. The design of the pendant is amazing to stare at, with certain diamond clusters set in yellow gold and others set in oxidized silver, all in a somewhat geometric checkerboard pattern. The slide at the top of the