My mother certainly wondered what I was doing when I had these made up, and you may too. Upon first look it doesn't seem like a very exciting clasp. But those of you who love vintage German glass will be excited to have the perfect match for your special vintage projects. This uses our special pendant clasp ring placement. The centerpiece is 16 mm by 20 mm. The clasp is 31 mm from ring to ring. The centerpiece is set in a sterling silver box clasp.