Centring on a cushion-shaped sapphire weighing 22.59 carats， embellished with shield-shaped diamonds totalling approximately 1.75 carats， mounted in platinum. Ring size： 6

Gübelin report 17040090， 24 April 2017， blue colour， Burmese origin， no indications of heating； along with an information sheet， stating ‘large， natural sapphires of gem-quality from all major sources difficult to find.’

Sapphires symbolize nobility， solemnity and conformity and the blue colour of sapphires are widely perceived as a prestige and sophisticated colour. As early as the ancient Egyptian， Roman and Greek periods， sapphires were adopted for decorating churches and temples. This gemstone was also embroidered in the crowns of the British Kings and Russian Tsars and their ceremonial robes for religious tributes.
Burmese sapphires are substantially recognized as the highest quality apart from those of the legendary Kashmir mine. Nowadays， significant sapphire deposits are found including Burma， Thailand， Sri Lanka and China. Their colour contains enough trace elements of titanium， exhibiting beautiful blue hues and saturation.
Sapphires mining production are significantly reduced in recent years especially those of untreated and possess vivid and mesmerizing blue colour. Natural sapphires that weigh over ten carats are extremely rare to find due to excessive mining over the years. In this auction， China Guardian （HK） will present a 22.59 carat Natural Unheated Burmese Sapphire and Diamond Ring， possessing a saturated blue colour and with its exceptional large size； undoubtedly a highly sought after piece by collectors.

Price estimate:
HKD: 7,200,000 - 8,100,000
USD: 923,000 - 1,038,000

Auction Result:
HKD: --