Tanzanite and diamond ring

Collet-set with an oval tanzanite, the mount pavé-set with brilliant-cut diamonds, further accented with brilliant-cut diamonds of yellow tint, size 51, French assay and maker's marks, case stamped Jean Vendôme.

Please note that the diamonds of yellow tint have not been tested for natural colour. French maker's mark, French assay mark for 18 carat gold. Oval tanzanite measuring approximately 13.95 x 11.10 x 7.78mm, calculated to weigh approximately 8.35 carats, lavender blue, with good transparency and minor abrasions. Diamonds of yellow tint well matched in colour. Diamonds estimated to weigh a total of approximately 6.00 - 7.00 carats, on average H-I colour, VS-SI clarity, as gauged and graded in the mount. Scratches to the metal commensurate with wear. In good condition. Gross weight approximately 20 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."