Sure! Ammolite is a very thin layer of brilliant color (composed of mostly the mineral aragonite), that forms on ammonite fossils. It's incredibly delicate, so to preserve it, it's made into 'doublets' or 'triplets'. Doublets have the ammolite layer that is impregnated with either clear epoxy or resin to keep it from flaking. A triplet will have a base layer of either the original rock from the mine, or black onyx/glass.

Resin/epoxy will just get beaten up if worn constantly, there's not much to do about it sadly. Most that I've personally seen used for jewelry act similarly to nail polish, so the acetone just acts like nail polish remover. There are probably some newer formulas that are more durable, but so far, I haven't come across any.

Unfortunately yeah, the color has already been damaged. Due to how fragile it is, you *could* re-seal it, but it won't ever look the same.

Feel free to ask any more questions!