Sapphire & Ruby Brooch 18kt Yellow Gold. This custom made oval shaped brooch measures 2” x 1 1/2” has a ball hinged pin catch to secure it. The oval sapphire weighs 180cts and in the center is a marquise cut ruby weighing 10.34cts, both are set in 18kt yellow gold. The sapphire is opaque and of specimen grade. Marked 18K, Included is an insurance appraisal of $3800.00.