Sapphire bead and diamond necklace, Michele della Valle

Composed of five graduating strands of disc-shaped sapphire beads, decorated at intervals with four open lozenge-shaped links set with numerous round diamonds weighing approximately 7.40 carats, mounted in 18 karat white gold, length approximately 37 to 43 inches, signed Michele della Valle.  

Length is approximate as necklace is hard to measure. There is about 6 inches between longest and shortest strand in center segment. The beads total aproximately 1809.00 carats. The beads are a deep blue color and are semi-opaque to opaque. Diamonds are approximately H-I color and VS clarity. In good condition. There is no clasp, the necklace simply slips over the head.
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.