Cabochon emerald and diamond brooch, mounted by Yard

The curved spray motif set with 6 cabochon emeralds and 1 emerald drop together weighing approximately 25.00 carats, completed by 18 old European-cut diamonds weighing approximately 9.10 carats and 1 pear-shaped diamond weighing approximately 1.60 carats, mounted in platinum, signed Yard. 

Stones were supplied by the client and mounted to a design by Yard, signed Yard on an applied plaque on the back of the mounting at the center. The largest emerald is slightly darker in tone than the small cabochons, all have some eye visible inclusions; the diamonds are approximately H-J color, and VS to I clarity (a few diamonds are chipped); the mounting is in overall very good condition.
In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. 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. Illustrations in the catalogue may not be actual size. Prospective purchasers are reminded that, unless the catalogue description specifically states that a stone is natural, we have assumed that some form of treatment may have been used and that such treatment may not be permanent. Our presale estimates reflect this assumption.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING CONDITION OF A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF SALE PRINTED IN THE CATALOGUE.