Set with a step-cut aquamarine flanked by cabochon rubies, size N. 

Stamped 750 for 18 carat gold. The aquamarine measuring approximately 21.3 x 16.2 x 9.3 mm, estimated to weigh approximately 23.00 - 23.50 carats, gauged within the limitations of the bezel mount. The aquamarine is a light very slightly greenish blue, transparent and eye-clean to slightly included with a few abrasions at the facet junctions, visible under close inspection. The ruby cabochons are medium to medium-deep purplish red, semi-transparent, predominantly moderately included with surface-reaching inclusions, chips and other typical inclusions. Signs of normal wear to the metal, scratches consistent with use. Shank very slightly out-of-round. In overall good condition. Gross weight approximately 17.8 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."