I have inherited a set of pearls - necklace, bracelet and, earrings..

Hi I have a set of pearls that i inherited from my great grandmother, they went to my mother, then to me. It's a pearl necklace, bracelet and earrings. I have tried looking these up and can't find them anywhere.

They are marked 10kt on the clasps and earring studs with the markings RII, r with the roman 2, could you tell me what they are and how much they are worth and they are tied each one by the pearl thank you trisha