Pink sapphire bow brooch and pair of pink sapphire and garnet earclips

All of bombé form, the bow brooch pavé-set with numerous round pink sapphires, accented with 23 small round diamonds, mounted in silver gilt; the earclips pavé-set with round pink sapphires and green garnets respectively, mounted in 14 karat gold. 

The brooch is silver and gold but the pinstem is stamped 750 with maker's mark "I Z", and the mounting is marked with the letters A M flanking a fleur-de-lys in a circular plaque, note small area on bottom edge of bow where gold has worn away. The pink sapphires range in tone from pale to medium dark purplish pink, the diamonds are approximately J-L color, VS-I clarity. The pink sapphires in the earclips vary in tone from light to dark purplish pink, and the green garnets from light to medium in tone. Both earclips are stamped 585, and also with same maker's mark "I Z".
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.