Set with a step-cut sapphire weighing 12.70 carats, within a frame of brilliant-cut diamonds, the mount accented with similarly cut stones, size 51, signed Van Cleef & Arpels and VCA, French assay and maker's marks. 

Accompanied by AGL report no. CS 68766, stating that the step-cut sapphire weighing 12.70 carats and measuring 13.43 x 11.06 x 8.30 mm, is of Ceylon origin, with no evidence of heat. Please note that the monture is by Van Cleef & Arpels. Signed Van Cleef & Arpels and VCA. French maker's marks. French assay marks for platinum and gold. Stamped Pt 950 for platinum. Sapphire blue of medium strong saturation, with very good transparency, a few minor typical inclusions, some surface reaching. Diamonds estimated to weigh a total of approximately 2.50 - 3.00 carats, on average G-H colour, VS clarity, as gauged and graded in the mount. Little signs of wear to the metal. In very good condition. Gross weight approximately 12 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 and to the Notice regarding import of Burmese jadeite and rubies into the US.
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."