"Options: Single Charm Necklace (choose any given chain) -------------------------------------------- Material: *18k Gold Filled Chain *Gold Plated Charm -------------------------------------- Size & Length Options: Bead Chain: 20\" Singapore Chain: 16\" with 1\" extender Charm Size: 13mm x 14mm ►GOLD FILLED: Our gold filled jewelry has an outer layer of entirely 14k or 18k gold that is pressure-bonded to a jewelers brass base or sterling silver metal. This technique provides a longer life span