Platinum, 'Pigeon Blood' Ruby and Diamond Ring Centering one round ruby ap. 3.90 cts., and one old European-cut diamond ap. 2.65 cts., flanked by 10 baguette and 2 trapezoid-shaped diamonds ap. .70 ct., no. B4066, circa 1920. Size 6 3/4. With box signed J.E. Caldwell. With AGL report no. 1114836 stating 'Classic' Burma (Myanmar) origin, no gemological evidence of heat or clarity enhancement. With Appendix letters stating Pigeon Blood color, from the Mogok mines, and confirming its rare attributes. With GIA report no. 5212675992 stating F color, VS1 clarity. With Gubelin report no. 21052060 stating Burma (Myanmar) origin, Pigeon Blood color, with no indications of heating. C Property Formerly from the Estate of David C. Titus