Set with a carved aquamarine highlighted with a cushion-shaped ruby and brilliant-cut diamonds, the mount embellished with stylised motifs set with similarly cut diamonds, size 54, maker's mark for Michele della Valle, case stamped della Valle.

Maker's mark for Michele della Valle. Italian assay marks for 18 carat gold, mounted in white gold. Inscribed DWM. Aquamarine stated to weigh approximately 75.00 - 80.00 carats, greenish blue of medium saturation, translucent, with typical inclusions, some surface reaching, small scratches. Ruby stated to weigh 0.68 carat, measuring approximately 6.65 x 6.70mm (depth non measurable), red of strong saturation, with minor abrasions. Diamonds bright and lively. Scratches to the metal consistent with light use. In very good condition. Gross weight approximately 33 grams. Case stamped della Valle.
"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."