Signature Chain Shop necklaces, Diamond cuts, Chain necklace Bulgari Contemporary 18 Karat Gold Chain Bvlgari Necklace For Sale at Gold Rope Chain For Men Veneda Carter VC065 Thin Signature Chain Cuban Link Chain Sizes: A Comprehensive Guide to Perfecting Your Style. BY CHARLOTTE 18" Signature Chain Necklace Our fine 14k Gold 18" Signature Chain Necklace is the perfect chain to adorn your most treasured 14k gold pendants. Keep it simple and meaningful with a single 14k birthstone pendant or layer with multiple pendants to create your story of love. PRODUCT DESCRIPTION Pendants sold separately. We suggest a maximum of 3 pendants per necklace. Length: 18 inches; adjustable to 16 inches. Chain thickness: 0. 9mm.