Sapphire and diamond pendant-necklace

The pendant centering a large cushion-shaped sapphire weighing  59.13 carats, framed by clusters of 43 pear-shaped, marquise-shaped and round diamonds weighing a total of approximately 10.00 carats, mounted in platinum, suspended from a delicate scallop-edged necklace set continuously with 131 round diamonds weighing approximately 5.30 carats, mounted in platinum, length 15 inches, numbered 85329, pendant detachable.

Good condition. The cushion-shaped sapphire is slightly medium violetish blue; a moderate amount of silk is visible when the stone is tilted to a sharp angle. Moderate color-zoning (not apparent when worn). Please see AGL report no. CS 36977 stating that the sapphire is of Classic Ceylon origin; heat enhancement: none. The diamonds are approximately G-H color and VS clarity. Fitted with a safety clasp.
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.

Accompanied by AGL report no. CS 36977 stating that the sapphire is of Classic Ceylon origin; heat enhancement: none.