Sterling Silver Rhodium-plated 2.7mm Box Chain Necklace - 18 Inch - 14.5 Grams In Sterling Silver in Plated Metal - - Width of Item: 2.7 mm - Length of Item: 18 in - Chain Length: 18 in - Chain Width: 2.7 mm - Clasp /Connector: Lobster (Fancy) - Finish: Polished - Chain Type: Box - Clasp Width (Male end): 7 mm - Clasp Width (Female end): 5 mm - All of our jewelry for women and men are authenticated with a 10K or 14K hallmark and are tested to pass FTC regulations.