It's just for silver and you basically just spray it on and then wipe it off. You could even use the silver cleaning cloth to wipe it off with. I would recommend getting two-toned pieces at Tiffany's.
Thanks for the reply alohamariss.

As I understand, you recommend getting two-tone metals cleaned professionally by Tiffany. Will the cloth and/or spray be harmful if used on both?
I wonder how it's possible to clean both metals separately when they're in the same piece of jewelry?!
