10 Karat White Gold Diamond Pulse Pendant Necklace. This unique pendant features a marquise shaped pendant with fancy cut that moves with your pulse. The center diamond has a weight of 0.04 carats and is set in 10K white gold. The pendant is covered in smaller round diamonds that have a total weight of 0.10 carats and add extra sparkle to the pendant. This pendant comes with an 18 inch 10K white gold chain.