Vintage Art Deco Czech crystal rhinestone, open-backed, gold tone brooch pin, stunning large clear crystals in unusual shapes

Stunning Czech rhinestone Art Deco brooch with remarkable large shaped clear rhinestones claw / prong set, some with open backs in antique gold tone. Characteristic Czech construction and fixings for the period, fastening with a pin and old style C clasp. The beautiful square and marquise / navette cut crystal rhinestones have been claw set in open-backed settings so that the light streams through. The smaller crystal have closed back cup settings, which indicates this is an early piece. The brooch is in very good vintage condition.