Set with a step-cut sapphire, the mount decorated with single-cut diamonds, the shoulders further accented with square-cut diamonds, size 56. 

Accompanied by Gübelin report no. 18020237, stating that the step-cut sapphire, measuring 13.05 x 9.60 x 8.95mm, is of Ceylon origin, with no indications of heating. Partial assay mark for 18 carat gold and Italian maker's mark. Sapphire blue of strong saturation, small scratches, fractures, nicks. For more information on the sapphire, please refer to the Gübelin report. Scratches to the metal consistent with wear. In good condition. Signs of resizing and soldering. Gross weight approximately 8 grams.
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Please note that colour, clarity and weight of gemstones are statements of opinion only and not statements of fact by Sotheby's. We do not guarantee, and are not responsible for any certificate from a gemological laboratory that may accompany the property. We do not guarantee that watches are in working order. 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. Prospective buyers should also refer to refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue, in particular to the Notice regarding the treatment and condition of gemstones.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."

Accompanied by Gübelin report no. 18020237, stating that the sapphire, is of Ceylon origin, with no indications of heating.