Authentic David Yurman Gorgeous Sparkling Sterling Silver Faceted Black Onyx Diamond Rectangular Enhancer Necklace. This bold sumptuous necklace is absolutely stunning! It is very easy to wear. The chain measures 3.5 mm X 26 inches long. The clasp is engraved: D Y 925. The enhancer pendant measures 1.65 inches long X .8 inch wide X .5 inch thick. It holds a gorgeous faceted glossy black onyx and sparkling bright white diamonds. It is engraved: D Y 925. It weighs a very substantial 53.1 grams. It has been beautifully cared for. Absolutely stunning. It comes in it's David Yurman pouch. Please visit my ebay store for unique estate jewelry. Thank you.