Two natural pearl and diamond necklaces

One necklace composed of fifty-seven graduated natural pearls measuring from 6.35 to 11.00mm, alternating with seed pearls,the clasp collet-set with a marquise-shaped diamond and single-cut diamonds, length approximately 505mm, one small diamond deficient, the other necklace composed of fifty-two natural pearls measuring from 5.10 to 7.90mm, alternating with seed pearls, the clasp set with a natural pearl within a frame of circular-cut diamonds, length approximately 465mm.

Accompanied by SSEF report no. 90978, stating that fifty-four oval to barrel shaped and button shaped pearls were found to be natural, saltwater, and three were found to be natural, freshwater. Also accompanied by SSEF report no.90979, stating that fifty-two oval to barrel shaped and button shaped pearls were found to be natural, saltwater. Pearls of white to light cream body colour, partly with rosé and green overtones, with good skin an luster, a few scratches and growth marks. For more information on the pearls, please refer to the SSEF reports. Diamonds bright and lively, one small diamond deficient. Scratches to the metal consistent with normal use. Clasps secure, safety chains. In good condition. Total gross weight approximately 54 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."