Peridot and Gold Bar-Brooch 203 Qty: 1 2 3 4 5 6 7 8 9 10 Price £160.00 PERIDOT GOLD BROOCH. 9ct yellow gold brooch set with a 6 x 4 mm peridot stone. The brooch measures 36 mm approx. It has a 9ct pin & safety catch fitting Birthstone - Peridot for August brooch gold