The long tri-toned U necklace’s pendant piece is 7.1/8″ x 1/8″. The chain length is 37.0″and this necklace also has a 4.0″ x 1/8″ back plate that holds the necklace in place on the back of your neck. Not only is the back plate is a functional piece, it also looks very beautiful on the back of the neck. The back plate will match the color of the chain. Materials: 14k rose gold-fill (14k gold over brass core/no nickel), oxidized silver and sterling silver (.925). There are four versions of this necklace; one available on a silver chain, the other on a rose gold chain. Additionally, the gold, oxidized and sterling silver version is also available, either on a silver chain or a gold chain. Click the drop-down menu to choose your desired metal combination. All materials are hypoallergenic. This necklace is handmade in the California and New York production studios.