I do have another ring I should be posting either this month or next that is stamped .417 and I believe that's 10k. It's going to be a while before I can post because the stone fell out and I'm going to try to replace that before I list it. While I can't post that ring, I can post the matching necklace, I'm not sure of the marking on the necklace though. it's very unclear as well. I can post it tonight if you'd like.