An important sapphire and diamond ring, by Bulgari. Photo Christie's Image Ltd 2014

Set with an oval-shaped sapphire weighing approximately 17.24 carats, flanked by shield-shaped diamonds, mounted in platinum and 18k yellow gold, ring size 5½. Signed Bulgari. Estimate HK$2,000,000 – HK$3,000,000 ($259,225 - $388,838)

Accompanied by report no. 11040001 dated 5 April 2011 from the Gübelin Gemmological Laboratory stating that the 17.24 carat sapphire is of Burma (Myanmar) origin, with no indications of heating

Christie's. HONG KONG MAGNIFICENT JEWELS, 27 May 2014, Convention Hall - http://www.christies.com/