Natural pearl and diamond necklace, circa 1920

Composed of millegrain-set marquise-shaped and circular-cut diamonds, the front with garland and ribbon designs supporting seven oval and button shaped natural pearls measuring from approximately 11.40 x 11.50 x 9.90mm to 15.10 x 15.15 x 13.70mm, length approximately 360mm, case stamped Cartier, the exterior of the case with monogram and coronet for Mary, Duchess of Roxburghe.

Accompanied by SSEF report no. 79503, stating that the seven pearls were found to be natural, saltwater, with no indications of artificial colour modification, conclusions as far as the setting permits; additionally accompanied by The Gem & Pearl Laboratory report no. 10913, stating that the seven pearls were found to be natural, saltwater. Four natural pearls of white to slightly cream body colour, partly with rosé and green overtones; three natural pearls of grey body colour with rosé and green overtones; all with very good skin and luster; for shapes, measurements and further details on each pearl, please refer to the SSEF report. Diamonds estimated to weigh a total of approximately 32.00 - 35.00 carats, on average H - J colour, VS - SI clarity (a few I), as gauged and graded in the mounting, one marquise-shaped diamond chipped. Signs of normal wear to the metal. Clasp secure; safety catch. In very good condition. Gross weight approximately 65 grams. Fitted case for lots 494, 495 and 496, stamped Cartier London 175 New Bond St Paris 13 Rue de la Paix New York 658 5th Avenue, the exterior of the case with monogram and coronet for Mary, Duchess of Roxburghe.
"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."