Plique-à-jour enamel, sapphire, ruby and diamond brooch, Boucheron, Paris, circa 1945

The pair of flowers with blue and red plique-à-jour enamel petals and centers of round rubies and sapphires, additionally decorated with a spray of round rubies, sapphires and diamonds, mounted in two-color 18 karat  gold, signed Boucheron, Paris, numbered 506, maker's marks, assay marks. 

Good condition. Signature found on the reverse of one bow loop. The bow is composed of a slightly more pinkish gold than the flower stems. Enamel in generally good condition. Area of minor enamel damage on the blue flower, visible only from the reverse. Some of the enamel in the front of the blue flower covers the gold mounting. The sapphires are medium blue and eye-clean; the rubies are pinkish red and lightly included. The diamonds are approximately G-H color, VS clarity.
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.