This necklace consists of a gold or silver plated brass coin that has your choice of crystal pieces attached. There is a large (15mm) and small (10mm) coin option, you can order one or the set. If you order the set, the small coin will come on a 16 inch chain, and the large coin will come on a 18 inch chain, but if you’d like a different length you can specify with your order. If you only order one necklace, it will come on an 18 inch chain, unless you specify differently. All chain is plated, hypoallergenic, and nickel free.