A platinum, ruby and diamond ring by Oscar Heyman Brothers (OHB) set with 29 step cut red rubies and 26 round brilliant cut white diamonds. The rubies show no indications of heat treatment and have inclusions which indicate Burmese origin. Numbered 20544 with scratch marks for E Bro.CN. Made in 1935 by Black Starr and Frost for Oscar Heyman.
Ring size: 7 (US), N.5 (UK)
Total ruby weight: approximately 4.80 carats
Total diamond weight: approximately 0.80 carats
Weight: 10.73 grams