The cushion-shaped sapphire weighing 11.06 carats, flanked by cushion-shaped diamonds each weighing 3.01 carats, the shank accented by small single-cut diamonds, signed 5¾.

Accompanied by Gübelin report no. 1005557 stating that the sapphire is of Kashmir origin, no indications of heating. Together with an appendix from Gübelin discussing the rarity and virtues of this particular gemstone. Also accompanied by GRS report no. GRS2010-033185 stating that the sapphire is of Kashmir origin, no indication of thermal treatment; and AGL report no. CS 38950 stating that the sapphire is of Classic Kashmir origin, no gemological evidence of heat enhancement present. Also accompanied by GIA report no. 15082048 stating that the 3.01 carat diamond is D color, SI1 clarity; and GIA report no. 14568792 stating that the 3.01 carat diamond is D color, VS2 clarity. The additional small single-cut diamonds are approximately G-H color and VS clarity. Lovely detailed engraving throughout the mounting which remains crisp and in good condition. Stamped with maker's mark which is a backwards R and a B within a rectangular frame.
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 Gübelin report no. 1005557 stating that the sapphire is of Kashmir origin, no indications of heating.  Together with an appendix from Gübelin discussing the rarity and virtues of this particular gemstone.  Also accompanied by GRS report no. GRS2010-033185 stating that the sapphire is of Kashmir origin, no indication of thermal treatment; and AGL report no. CS 38950 stating that the sapphire is of Classic Kashmir origin, no gemological evidence of heat enhancement present.

Accompanied by GIA report no. 15082048 stating that one 3.01 carat diamond is D color, SI1 clarity; and GIA report no. 14568792 stating that the other 3.01 carat diamond is D color, VS2 clarity.