This clasp has wonderful color and wonderful texture. A vintage piece from Western Germany, it was labeled dark Siam ruby on the package. It has a wonderfully pebbly surface, giving it texture without the intense shine of crystal. It is good for a subtle piece where you want the clasp to blend in as part of a seamless presentation. The centerpiece is 15 mm by 18 mm and the clasp is 32 mm from ring to ring. The centerpiece is set in a hand-made sterling silver box clasp.