Lot 146. Magnificent 10.25-carat natural unheated Burmese Mogok “Pigeon’s Blood” ruby and diamond ring. Estimate HK$25,000,000 - 35,000,000 ( US$3,200,000 - 4,488,000). © Tiancheng International Centring on a cushion-shaped ruby weighing 10.25 carats,...

Lot 226. Important 6.00-Carat Natural Unheated Burmese Mogok “Pigeon’s Blood” Ruby and Diamond Ring, Tiffany & Co. Estimate：HK$ 9,800,000 – 15,000,000／US$ 1,260,000 – 1,920,000. Courtesy Tiancheng International. Centring on an oval ruby weighing 6.00...