Nothing sparkles like a Swarovski. I am lucky enough to have found a treasure trove of vintage Swarovski flat back jewels which I have used for these delightful clasps. The centerpiece is a Swarovski rivoli, item number 1122. The centerpiece is 18 mm and set in a hand-made sterling silver box clasp. The clasp is 31 mm from ring to ring and 19 mm wide. Available with one ring or two rings, please specify.