1 Gold Filled 12mm Toggle Clasp, ring this is a heavyweight clasp, measures approx 12mm diameter, 2.1mm thick. Bar is approx 18.5mm. Bar is marked 1/20 14K:

Gold filled is a relatively thick gold layer pressure bonded to a base metal, usually brass. Most Goldfilled items are manufactured in the United States, from where we source our stock. In order to be legally described as Gold Filled in the USA, the gold content must be a 5% or 1/20th by weight and be a minimum of 12Kt, ( or 10% if 10Kt).

All of our Gold filled items are at the highest gold purity of 14Kt, hence the designation 1/20, 14K, which is stamped where noted in the description.