Swarovski Montana rivoli clasp

I've said it before and I'll say it again: nothing sparkles like a Swarovski. And Swarovski rivolis have a certain sparkle that is unique from other Swarovski sparkles. This is a vintage piece made by D.S. & Co. The centerpiece is 15 mm and is set in a handmade sterling silver box clasp. The clasp measures 30 mm from ring to ring.