Diamond ring and a pair of diamond ear studs

The ring of toi et moi design, set with two cushion-shaped diamonds weighing 2.50 and 2.56 carats, the mount decorated with circular- and single-cut diamonds, size 52^1/2; each ear stud set with a circular-cut diamond weighing 1.96 and 1.97 carats, screw back fittings.

Please note that the revised estimate is CHF 10,000 - 20,000. Ring stamped 750 for 18 carat gold, mounted in yellow and white gold. In our experts' opinion, the cushion-shaped diamonds weighing 2.50 and 2.56 carats, are M+ and L-M colour, VS2 and SI1 clarity, respectively. Side diamonds bright and lively. Little signs of wear to the metal. In very good condition. Ear studs stamped 750 for 18 carat gold, mounted in white gold. In our experts' opinion, the circular-cut diamonds weighing 1.96 and 1.97 carats are M+ colour, SI-I clarity, chips around the girdle. Signs of normal wear to the metal. In good condition.
"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."