fanned you back. The ring that looks gold with criss cross design and the tiniest diamond chips looks like it has a 7 stamped inside I would guess this one might be gold plated. The ring setting with on stone in the middle has something stamped that I can't read. The ring with the large green stone has a lot of stamping: some name (I guess the name of a company but I can't make it out) and I'm pretty sure 18 kt H GF(at least I think it is an H) the gf I can read and then there is something tiny after that maybe two letters but I can't read that very last stamp. The biggest ring has a 14kt stamp but I am pretty sure it is not because it looks way too shiny (gaudy looking to me). The gold tone ring with the fish engraved has no stamp marks visible: it looks like the correct gold color when compared to a solid gold band but it has no markings. I hope this helps.
sorry it took a while to respond to you. I meant to type the ring with no stone in the middle has something I can't read (not much of a stamp). All these rings show signs of being worn. I really hate to explain jewelry when I know so little abuot it, but that is the best I can tell from what I see. Thank you for your support and I hope my expainations helped some.