Fancy Feet & Co. 18k Gold Filled Dainty Mariner AnkletWhat is 18k Gold Filled? 18k gold filled is a beautiful more affordable alternative to solid gold as it is a genuine layer of gold permanently bonded onto base metal with heat and pressure that contains 100+ times more gold than gold plated.It is extremely durable, won't chip or flake, tarnish-resistant, and a great alternative to expensive solid gold jewelry. It looks great and with proper care. Gold-filled jewelry can also be worn by people with sensitive skin since its 100% Hypoallergenic, Lead and nickel free.