This is a platinum on 18K gold and diamond Edwardian brooch. The brooch consists of a pierced top set with Old European cut diamonds in a geometric pattern. The twelve Old European cut diamonds have a total weight of 1.20 carats with an average clarity of SI1 and an average color of H-I. The 39 rose cut diamonds have a total weight of .50 carat. The brooch has a hinged straight pin back with side clutch closure. It measures 2" long by 7/8" in width. The workmanship is fine and the condition is excellent. Circa 1910.