Natural pearl and diamond double clip brooch, Cartier, circa 1935

Composed of a pair of shield-shaped plaques of geometric design, set with circular-, single-cut and baguette diamonds, framing a central detachable motif accented with three brownish grey natural pearls, one button shaped, and two round to roundish, measuring approximately 10.05 x 10.10 x 9.90mm, 9.60 x 9.80mm and 9.65 x 10.25mm, and baguette diamonds, signed Cartier, two small synthetic rubies inset to the reverse to show how to orient the frame.

The two small rubies inset to the reverse are synthetic and thus this brooch may be imported into the US. Accompanied by SSEF report no. 79530, stating that the button shaped pearl measuring approximately 10.05 x 10.10 x 9.90mm, and the round to roundish shaped pearls measuring approximately 9.60 x 9.80mm and 9.65 x 10.25mm, were found to be natural, saltwater, with no indications of artificial colour modification; together with Gem & Pearl laboratory report no. 10914. Signed Cartier London. Pearls of brownish grey body colour, one partly with a green overtones, the other two with a rosé overtones, with a few growth marks and blemishes; for further information on the pearls, please refer to the SSEF report. Diamonds estimated to weigh a total of approximately 18.00 - 20.00 carats, on average G - I colour, SI - I clarity, as gauged and graded in the mounting. Little sign of wear to the metal. Brooch pin with a rotating safety catch. In very good condition. Gross weight approximately 56 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."