Hello everyone, OP here :). Just like to verify a few things. The necklace was not a beaded thing, it had a glass charm about the size of the eraser on a pencil, and that was the part my cat got. Thankfully he didn't get the chain, that would be so painful! I will take him to the vet soon to make sure it went through him safely. It actually was in a jewelry box, but it was upright and had handles that his paws could slip through-which I was very much not aware of xD. There were no beads or sharp ends though, and since it is so small, I think the little guy will be okay. Clever little bastard though.