18 KT Gold Electroplate, electroplate is in the dictionary. It is a process where they force gold( this case 18 KT= 75% gold content) off a positive electrically charged pole inserted in a tank holding water, the gold is drawn to the negative charged pole at least 6 inches away, which holds the item being plated, usually silver. This is done for a set amount of time, to allow a fixed depth to develop on the surface of the item. They are not sizable, meaning a jeweler will not attempt to change the size usually.