Lot 1884. Rare 396.89 carats Burmese Sapphire and Diamond Pendant Necklace, Mounted by Etcetera. Estimate: HK$4,000,000.00 - HK$8,000,000.00 (US$500,000-1,000,000). © Christie's Images Ltd 2018.

Cabochon sapphire of 396.89 carats, rose-cut sapphires, marquise-cut diamonds of 1.01 and 1.01 carats, circular-cut diamonds, gold, 74.0 cm, maker's mark (Etcetera).

Guinness World Records, 2018: 396.89 carats, the largest cabochon-cut sapphire, Myanmar
Gübelin, 2018, report no. 1803118/1: 396.89 carats, Burma, no indications of heating, Appendix Letter 
Lotus, 2014, report no. 7099-4170: 396.89 carats, Burma, no enhancement, 'cornflower blue', Research Letter
SSEF, 2011, report no. 58956: 397.095 carats (weight before repolishing), Burma, no indications of heating, Appendix Letter 
2 GIA, 2016-2017, report no. 1258171939 and 2238309768: 1.01 and 1.01 carats, E to F colour, VS1 to VS2 clarity respectively.