Necklace and ring duo!

My mom found this never-worn set while cleaning out her old jewelry box. According to the card (last photo) it seems like the stone is amethyst! Selling for low because I would rather it goes to a new home instead of the trash (-: Also the ring has some sign of rust on the inside of the dome? You can see it in the 2nd photo. Not sure how to reach in there to fix it but it’s hardly noticeable! The ring is adjustable in size as well. Feel free to ask questions or make offers!