A VINTAGE BURMA NO HEAT RUBY AND DIAMOND BIRD BROOCH in yellow and white gold, designed as a cockatoo perched on a branch, the head pave set with round brilliant cut diamonds and a round cut ruby eye, the body set with oval cut rubies, the branch set with further diamonds, the rubies all totalling 5.0-5.5 carats, indistinct British hallmarks, 9.7cm, 36.0g. With a gemmological verbal assessment stating that the rubies are of Burmese origin with no indication of heat treatment.