Emerald and diamond pendent necklace, early 20th century

The pendant featuring a millegrain-set step-cut emerald framed within a series of swing-set frames decorated with single-cut diamonds, suspended from a chain spectacle-set with circular-cut diamonds, length approximately 475mm, may be worn as a sautoir with three additional chains, maximum length 815mm.

Accompanied by SSEF report no. 72981, stating that the emerald, weighing approximately 6 carats, measuring approximately 13.30 x 10.75 x 5.00 mm, is of Colombian origin, with no indications of clarity modification. The emerald is of medium strong saturation, for further information, please refer to the report; good transparency, few crystal inclusions, few scratches and nicks. Diamond bright and lively. Clasp set with rose diamonds; opens by unscrewing nut which allows ring to flip open. Signs of normal wear to the metal, scratches consistent with use. In good condition. Gross weight approximately 14 grams. Please note that Sotheby's is not responsible for the accuracy of any estimated weights provided by gemmological certificates.
"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."