The button-shaped pearl measuring approximately 13.25 mm, flanked by two pear-shaped diamonds.

Metal tested as gold and platinum. Pear-shaped diamonds weighing approximately 1.70 and 2.00 carats, F-G and H-I colour respectively, SI clarity in our experts' opinion, gauged and graded in the mount. The diamonds are of Type IIa. The natural pearl is an elongated button shape, slightly cream bodycolour, typical blemishes but overall smooth skin, good metallic lustre. For further information please refer to the SSEF report. Signs of normal to extended wear to the mount and signs of solder repairs, the pearl is probably a later addition. Overall condition is good.
"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."

Madame Diane Benvenuti, née Rothschild (1907-1996), was the daughter of Baron Robert de Rothschildও, one of the partners of banque Rothschild Frères in Paris, and Nelly Beer, a niece of German composer Giacomo Meyerbeer. Diane and her brothers and sister Alain,Cécile and Elie, spent their childhood between the hotel particulier at 23 avenue de Marigny in Paris and the château de Laversine, off Chantilly.

She was first married first to a diplomat, Anatole Muhlstein, with whom she had three daughters, and then, in 1952, to pianist and Paris Conservatoire music teacher Giuseppe Benvenuti. Concerned about what we may call now 'ecological' matters, she immensely enjoyed the gardens and private potager of her country seat, the Pavillon de Voisins, at Louveciennes, near Paris. Her quiet and constant generosity was famous. After joining the Free French Forces in 1945 as a nurse, she involved herself in the creation of Ecole Moria, a Jewish youth institution, and presented some of her husband's students with rare music instruments. A lady of great taste and enormous vitality, she will be remembered for her unfailing originality.