Centring on a step-cut sapphire weighing 19.43 carats, surrounded by brilliant-cut diamonds extending to the shoulders, the diamonds together weighing approximately 2.00 carats, mounted in platinum. Ring size: 6¼

Colour and Clarity: According to both Gübelin and SSEF reports, the sapphire is natural, of Burmese origin, with no indications of heating. SSEF appendix further states that this sapphires "exhibits a highly attractive colour combined with an outstanding purity........Its saturated blue colour - poetically also referred to as "royal blue"......A natural sapphire from Burma of this size and quality is very rare and exceptional." Please refer to the reports and appendix for details. In our opinion, the sapphire is of saturated blue colour, very clean to naked eyes and lively. Under 10x loupe, there are natural fingerprints on corners, not noticeable. Diamonds are about E to F colours, VS clarity. Condition: Vintage platinum ring mount, with signs of wear to the shank, overall in very good condition.
In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective qualified opinion. Illustrations in the catalogue may not be actual size. Prospective purchasers are reminded that, unless the catalogue description specifically states that a stone is natural, we have assumed that some form of treatment may have been used and that such treatment may not be permanent. Our presale estimates reflect this assumption.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING CONDITION OF A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF SALE PRINTED IN THE CATALOGUE.

Accompanied by SSEF and Gübelin reports numbered 76080 and 15081116, dated 3 September 2014 and 20 August 2015 respectively, stating that the 19.43 carat sapphire is natural, of Burmese (Myanmar) origin, with no indications of heating. The SSEF report states that the colour of this sapphire may also be called 'royal blue' in the trade. The SSEF Appendix Letter further states that the sapphire 'exhibits a highly attractive colour combined with an outstanding purity...Its saturated blue colour - poetically also referred as "royal blue" - is due to a combination of well-balanced trace elements in the gemstone, typical and characteristic for the finest sapphires of Mogok, Burma.'
Also accompanied by an SSEF Premium Appendix folio.