Swarovski inverted square seal clasp

This is one of my favorite Swarovski shapes. Item 2650 can be described at a flat-topped inverted rivoli. It seems to have depth without end. At one time, we had this shape in Montana and it was lovely. It is no less lovely in seal. The centerpiece is 14 mm and the clasp is 30 mm from ring to ring. The centerpiece is vintage and came from a box imprinted D.S. Swarovski. The centerpiece is set in a hand-made sterling silver box clasp.