Here at a.v. max we take a great deal of pride in the made in USA product that we produce. The plating process for our materials is very strong and will not tarnish. We use 22K gold plate, imitation rhodium plate, gunmetal plate, rose gold plate, 22K matte gold plate and matte imitation rhodium plate over brass. Please note that there is less than a 5% trace of nickel that is involved in our plating process to ensure the plating sticks to the brass. If you have a nickel allergy then yes, there is nickel in our pieces.