Diamond and emerald necklace

Old European-cut, single-cut and baguette diamonds weighing approximately 17.45 carats, mounted in platinum, necklace signed Tiffany & Co., pendant later added, length 15 inches.

Good general condition. Several links appear to have been later-added near the clasp to lengthen the necklace. The piece is a "marriage" of two elements: the necklace, circa 1925, is signed Tiffany & Co.; the associated pendant, circa 1915, is unsigned. Set with 332 old European-cut, single-cut and baguette diamonds; approximately G-J color, VS-SI clarity with the occasional I clarity. The largest old European-cut in the pendant is approximately 1.60 carats. 76 calibré-cut emeralds: square-cuts on the necklace, French-cuts on the pendant. One square-cut is missing. Chips and abrasions to the French-cuts. One of the French-cuts appears to be held in-place by colorless epoxy. Fitted with a later-added pendant hook.
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.