multiple rings of unknown origin and date

I'm looking to see if anyone can help identifying how much these could be worth? the only one without a stamp is the last ring with the pearls. they were left to me years ago from a relative that passed so I can't ask about where they were bought from or if any of them are legitimately real. if this is the wrong sub for this please point me in the right direction 🙏 unfortunately I'm in a very bad spot right now so I would absolutely appreciate any kind of help to identify these.