Tiny dark topaz clasp

This is a very dark piece of vintage Czechoslovakian crystal, but it is not black. It is topaz with hints of olivine when held under a light. It is a small clasp, good for delicate projects. The centerpiece is bezel set in a hand-made sterling silver box clasp. The clasp is 28 mm from ring to ring and 8 mm wide. It does have a bit of height and is 9 mm high.