Emerald, ruby, diamond and onyx brooch, Cartier, 1920s and later

Of Persian design, the onyx plaque inset with cabochon rubies, calibré-cut emeralds and with a later pear-shaped emerald and diamond cluster at the centre, signed Cartier, French assay marks for platinum and partial maker's mark.

Signed Cartier Paris Londres, partial French maker's mark and assay mark for platinum. Emeralds well matched in colour, with typical inclusions, some surface reaching, minor abrasions. Rubies well matched in colour, minor abrasions and nicks. Onyx overall in good condition. Diamonds bright and lively. Scratches to the metal consistent with age and use. In good condition. Gross weight approximately 24 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."