I have two tiffany silver jewelry that I need to get cleaned. i researched here and was told to use toothpaste, is there a particular toothpaste that I need to use? Because right now, I have crest toothpaste with whitening plus scope. It's green color, wont that turn my jewelry in a weird color? Do i have to use the white toothpaste? Is there any other way to clean it? Like lemon juice?