Because it resembles silver and is less expensive, alpaca silver is a popular material used in jewelry production. As a metal alloy, it consists of 55 percent copper, 20 percent nickel, 20 percent zinc and 5 percent tin. It is also referred to as nickel or nickel-copper plating. Alpaca silver jewelry is easy to care for as it does not tarnish as easily or as deeply as sterling silver and is easier to clean. Alpaca silver jewelry is both durable and beautiful, making it a high quality product.