Sterling Silver Rhodium-plated 4.5mm Flat Curb Chain Necklace - 18 Inch - 9.6 Grams In Sterling Silver in Plated Metal - - Width of Item: 4.5 mm - Length of Item: 18 in - Chain Length: 18 in - Chain Width: 4.5 mm - Clasp /Connector: Lobster - Finish: Polished - Chain Type: Curb - Feature: Solid - All of our jewelry for women and men are authenticated with a 10K or 14K hallmark and are tested to pass FTC regulations.