AN ART NOUVEAU DIAMOND AND PLIQUE-A-JOUR ENAMEL BROOCH
AN ART NOUVEAU DIAMOND AND PLIQUE-A-JOUR ENAMEL BROOCH

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AN ART NOUVEAU DIAMOND AND PLIQUE-A-JOUR ENAMEL BROOCH
Centering upon an old European-cut diamond, within an oblong openwork and multi-colored plique-à-jour enamel foliate surround, enhanced by rose-cut diamond borders, to the gold beadwork trim, mounted in gold, circa 1900