Large Paperclip Chain Gold Filled Necklace with Love Bar Charm. Bar Charm Options: Love You Back Pink & Blue Enamel Chain Length: 18" Chain Material: 18 Karat Gold Filled, Hypoallergenic, Nickel-free Handmade with Love in the USA. 18 Karat Gold Filled does not de-laminate or peel like Gold plated Jewelry nor does it tarnish as readily. Generally speaking, gold filled is better quality and will have a much longer lasting color than plated jewelry. To clean gold-filled it is best to use mild soap and water.