Lot 2025. A 5.32 carat 'pigeon blood' Burmese ruby and diamond ring. Estimate HKD 2,700,000 - 3,500,000 (USD 345,600 - 448,000) © Poly Auction Hong Kong Limited

Centering upon a cushion-shaped ruby weighing 5.32 carats, to the brilliant- and oval-cut diamond surround and shoulders, mounted in 18K gold, ring size 6. 

Accompanied by report no. 93137 dated 26 June 2017 from the SSEF stating that the ruby weighing approximately 5.323 carats is of Burma (Myanmar) origin, with no indications of heating Accompanied by report no. GRS2016-063009 dated 1 July 2016 from the GRS stating that the ruby weighing approximately 5.33 carats is of Burma (Mogok, Myanmar) origin, vivid red (GRS type 'pigeon's blood') color, with no indications of thermal treatment Also accompanied by 8 GIA diamond certificates, details see table.