philosophical questions for the ages: fake silver tarnish.

[cimorene]

I have this really pretty delicate silver and turqoise Navajo ring from my favourite aunt - tiny turquoise beads set back in a narrow band amidst delicate engraved patterns. Yesterday this thin coat of plasticky stuff peeled off of one end of it, taking a bead with it! It was like glue-cum-fake-tarnish, because the little lines of black from inside the patterns came off too, etched right on the clear surface of the nail-polish-like stuff. It doesn't look bad without the tarnish lines or anything, so it's not a really big deal, but I'm kind of baffled. I guess it might be easier to use fake tarnish? But couldn't you just dip the silver in some kind of chemical to age the surface, then wipe gently over the top with another one to make it shiny again? Who needs black paint and clear nail polish (or whatever it is)?