These Sunshine jewelry polishing cloths are perfect for all of your jewelry needs! They work beauifully to shine not only copper but also silver, brass, gold and other types of jewelry. I love to use them on my rings to help keep them shining. These little 2 1/2 x 3 1/2 cloths are also perfect for cleaning up chains and clasps that become dirty over time. These cloths can be used over and over again until they become black.