There is a big difference between the way gold plated and gold filled metals are made. Gold filled items have a much thicker, higher quality layer of gold on them, an actual layer of gold that is pressure bonded to another base metal. Gold plating is done through a chemical, electroplating process and coats the base metal with an extremely thin layer of gold. Gold filled literally has 100% more gold than gold plating, and is much more valuable and tarnish resistant. It does not flake off, rub off or change colors.