With a little jewelry cleaner, this will look as good as new! It’s a Black & White Diamond Infinity Necklace 1/10 cttw Sterling Silver 18" by Kay Jewelers and comes in the box. “A dramatic sweep of black diamonds is centered between twists of round white diamonds and sterling silver in this beautiful sideways infinity symbol necklace. With a total diamond weight of 1/10 carat, the necklace has an 18-inch box chain that secures with a spring ring clasp. Item #: 172928905 Content & Care Color diamonds pictured have been treated to permanently create the intense colors. Proper care is required in jewelry repair as excessive heat can damage diamonds and gemstones. This item is electroplated with rhodium or finished with an e-coating. These finishes may wear off with frequent use. Ask a jewelry consultant for details. Typographic errors are subject to correction. Merchandise enlarged to show detail and may not always be exactly as pictured. Chain mm widths are approximate.”