I have learnt that this is a very early Stephen Dweck bracelet, that involves 5 strands of onyx and silver beads. The clasp in an elaborate floral design, with a special hook closure. The beads are sterling silver, but I have not tested the elaborate clasp. Other than the excitement amongst people who viewed this bracelet, I can only say that I think it's a stunning creative piece and we are lucky to have it. The bracelet is 7 ½” long and they come to almost 2” wide.