The fanciful insect decorated with 3 segments of carved coral, the gold wings and head applied with black enamel, further decorated with 3 cabochon emeralds and 2 small round diamonds, signed Cartier, numbered 644506A, maker's mark and French assay mark. With signed box. 

Enamel is intact, as are the coral segments. Emeralds are a bright green color and the diamonds are approximately F-G color and VS clarity. Signed Cartier Paris and numbered 644506A. With maker's mark and french assay marks. In good condition overall. 1 1/4 x 3/4 inch.
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.

Potential bidders who intend to export this lot are advised that certain permits are required for export. If you are interested in this lot, please contact the Jewelry Department before bidding. 

For examples of similar butterfly brooches, see The Jeweled Menagerie, Suzanne Tennenbaum and Janet Zapata, p. 103 and inside front cover. See also The Cartier Collection: Jewelry, Flammarion,  p. 277.