An old trick for cleaning tarnished silver spoons: tear up small
pieces of alu foil, place in boiling water with the spoons, after
about ten min,as if by magic the tarnish is on the foil and not
the silver, If this works why should the foil damage the rings? I saw
this cleaning process on “tips from the trade” on BBC2 (only in
England) and it worked well, I suppose it could be used on silver
rings also, save allot of work.