For your silver jewelry to be beautiful again: put some ash (from an ashtray) in a paper towel and rub it along in your rings (you brush it actually.)
How to clean silver?
If you have a silver chain that has become black. Put a thin layer of silver foil to the hanger and the chain itself (separately). Then hot water and a little salt into a glass and leave it overnight in the silver stand. The next morning, remove them and wipe them with a soft cloth and voila, they are again pretty shiny silver.
Silver jewelry, you get pretty soon with a chalk cloth. Let an old towel lying some time in more than lukewarm water containing a pound of ground white chalk dissolved. If the chalk is drawn in the towel cloth hang to dry. Make it become silver slightly with warm water and rub with the towel over. Silver is immediately like new.