Sterling Silver 2.9mm Franco Chain Necklace - 16 Inch - Lobster Claw - 18.3 Grams in Sterling Silver - Product Attributes: - Lobster Claw Closure - Polished - Solid - Width of Item: 3.4 mm - Length of Item: 16 in - Chain Length: 16 in - Chain Width: 3.4 mm - Clasp /Connector: Lobster - Finish: Polished - Chain Thickness: 3.1 mm - Chain Type: Franco - Feature: Solid - Clasp Width (Male end): 5.3 mm - Clasp Width (Female end): 3.9 mm Polished ; Solid - All of our jewelry for women and men are authenticated with a 10K or 14K hallmark and are tested to pass FTC regulations.