Lot 145. Important pair of 5.63 and 5.06 carats natural unheated Burmese Mogok “Pigeon’s Blood” ruby and diamond earrings. Estimate HK$6,500,000 - 9,500,000 (US$833,300 - 1,218,000). © Tiancheng International

Each centring on a cushion-shaped ruby weighing 5.63 and 5.06 carats respectively, surrounded by marquise-shaped diamonds altogether weighing approximately 7.75 carats, mounted in 18 karat yellow and white gold.

Accompanied by GRS reports numbered GRS2013-090535 and GRS2015-071752, dated 6 September 2013 and 18 August 2015, stating that the 5.63 and 5.06 carat rubies are natural, Vivid Red (GRS type ''Pigeon's Blood'') colour, of Burmese (5.06 carat of Mogok) origin, with no indication of thermal treatment.

Tiancheng International. HONG KONG SPRING AUCTION, Jewellery and Jadeite, 7 July · 1 pm