Originally destined for life as a button, this is a wonderful piece of Czechoslovakian glass. It is blue green with almost an AB coating so it has a hint of silver as well. The swirl is darker than the background and shows the green side a bit more. But overall, the clasp registers as blue. The centerpiece is set into a hand-made sterling silver box clasp. The clasp is 32 mm from ring to ring and 22 mm in diameter. Available with one ring or two rings, please specify.