The round sapphire weighing 16.22 carats, within a delicate mounting of platinum set with small single-cut diamonds, size 6½ , signed Dreicer & Co. 

See Gubelin report stating the sapphire is Burmese, with no heat. The stone is a medium very very slightly violetish blue and is moderately included. Some windowing in color when off the finger, but not as evident when worn. Diamonds in the mounting are of decorative quality. Nicking, scratching a wear commensurate with regular use, but in good condition overall. Signed Dreicer & Co.
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 Gubelin report no. 9809009 stating that the sapphire is of Burmese origin; no indications of thermal enhancement.