Lot 2084. A rare 8.17 carats Burmese 'pigeon blood red' ruby and diamond ring. Estimate HKD 45,000,000 - HKD 65,000,000 (USD 5,800,000-8,000,000). © Christie's Images Ltd 2017

Set with an oval-shaped ruby, weighing approximately 8.17 carats, within an oval-shaped diamond surround, each weighing approximately 1.21 to 0.91 carat, to the circular-cut diamond undulating hoop, mounted in platinum and gold, ring size 6

Accompanied by report no. 86209 dated 30 May 2016 from the SSEF Swiss Gemmological Institute stating that the ruby is of Burma (Myanmar) origin, with no indications of heating and the colour of this ruby may also be called 'pigeon blood red' based on SSEF reference standards

Report no. 16057098 dated 30 May 2016 from the Gübelin GemLab stating that the ruby is of Burma (Myanmar) origin, with no indications of heating and the trade colour is pigeon blood red; accompanied by an appendix stating that the ruby possesses a richly saturated and homogeneous colour. The colour variety of this gemstone may also be called "pigeon's blood red". Such combination of characteristics is rare in natural rubies of this size 

Eight reports dated from 15 May 2015 to 9 May 2016 from the GIA Gemological Institute of America stating that the oval-shaped diamonds range are D colour, internally flawless clarity, with excellent polish and symmetry