Auction | China Guardian (HK) Auctions Co., Ltd.
2019 Autumn Auctions
Important Jewels and Jadeite

1133
17.57 CARAT NATURAL UNTREATED SRI LANKAN COLOUR-CHANGING STAR SAPPHIRE AND DIAMOND RING


Modelled as a flower, centring on a round cabochon colour-changing sapphire weighing 17.57 carats, embellished with brilliant-cut diamonds and yellow diamonds totalling approximately 7.35 carats, mounted in 18 karat white and yellow gold. Ring size: 6 1/4

STAR OF FANTASY

GRS report numbered GRS2014-091164, dated 10 September 2014, stating the sapphire is 17.57 carats, natural, Colour-changing from Violet (Daylight) to Purple ( Incandescent Light) colour, Sri Lankan origin, no indication of thermal treatment.
The needle-shaped inclusions of star rubies and sapphires are also known as 'silk'. They interact with light to present two or more crossing bright lines, creating a star-shaped on the surface of the gem. Gems with star effect phenomenon are usually more eye-catching and rare.

Price estimate:
HKD: 850,000 - 1,250,000
USD: 108,400 - 159,400

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