Vintage glass is something and I love, and this big vintage piece from Czechoslovakia is no exception. The depth and clarity are truly lovely. Each piece is set in a hand-made sterling silver box clasp. These clasps were make for us in Istanbul by some of the finest silversmiths in the world. The clasp measures 45 mm from ring to ring. It is 18 mm at the widest point and 12 mm high. Available with 1 ring or 2 rings, please specify.