Have you heard of Joseph Stachura Co., Inc. They are located in
Uxbridge Mass. I believe they are your next door neighbor, so to
speak. Call them at 508-278-6525 or check out
www.StachuraWholesale.com they carry square cabs from 3mm up to
6mm. In many stones. I know they have both rainbow and white
moonstone, which is pretty clear.
usual disclaimer. just a satisfied customer
Barbara Smith McLaughlin