Random black and white clasp

This hand-made sterling silver box clasp is set with a wonderful vintage glass tile. The tiles are black and white shot through with metallic gold. Each tile is different. Some have more white and some have more black. The edges of the tiles are smoothly beveled and the corners are rounded.  The clasp is a 17 mm square and is 30 mm from ring to ring. It weighs 8.7 grams. Available with one ring or two rings, please specify.