Easy Procedure here: I tried to turn my old silver chain to new by simple way of cleaning I used liquid detergent solution Procedure: 1. Prepare liquid solution 2. Keep your old silver into the solution 3. Waiting for 15 minutes 4. Take it out and brush it 5. Put it again in the solution for another 15 minutes 6. Brush it again 7. Now It cleaned and turned new silver Easy procedure to clean your old silver jewels... Try it at your home and give your feedback