what metals are used in costume jewelry?
In metal working, base metal is any metal that is not one of the noble or precious metals. In costume jewelry, base metals are often plated with a very thin layer of gold, silver, nickel, rhodium or other metal on the surface of the bead, finding, chain or other component. Brass is an alloy of copper, zinc and sometimes other metals. 1/10 10kt GF: 1/10 of the total weight must be 10kt gold.