Sterling Silver 5.7mm Semi-solid Flat Anchor Chain Necklace - 18 Inch - 13.0 Grams in Sterling Silver - Width of Item: 5.7 mm - Length of Item: 18 in - Chain Length: 18 in - Chain Width: 5.7 mm - Clasp /Connector: Lobster - Finish: Polished - Chain Thickness: 1 mm - Chain Type: Anchor - Feature: Semi-Solid - Clasp Width (Male end): 4.4 mm - Clasp Width (Female end): 4.8 mm - All of our jewelry for women and men are authenticated with a 10K or 14K hallmark and are tested to pass FTC regulations.