Centring on oval colour-changing sapphire weighing 8.56 carats, to a stylised mount decorated with pear-shaped and brilliant-cut diamonds, mounted in 18 karat white gold. Ring size： 7
GRS numbered GRS2015-088530, 24 August 2015, stating the sapphire is 8.56 carats, natural, colour-changing from Violet-Blue（daylight） to Purple（incandescent light） colour, Sri Lankan origin, no indication of thermal treatment；
AIGS numbered PGR14011449, 5 February 2014, stating the sapphire is 8.56 carats, natural, Vivid Blue – Violet colour, Sri Lankan origin, no indication of thermal treatment, the stone displays a change of colour of violetish blue in daylight to purple in incandescent light.
Price estimate:
HKD: 450, 000 - 580, 000
USD: 57, 700 - 74, 400
Auction Result:
HKD: 531,000
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