ca 1900. Gold, enamel, mother-of-pearl, opal, emerald, colored stones, gold paint. Diam. 1/2 in. (1.3 cm). This remarkable brooch is a highlight of the three-year partnership of Georges Fouquet, the French jeweler known for his inventiveness and high-quality execution, and Alphonse Mucha, the Czech graphic artist whose work perhaps best epitomizes the decorative luxuries of the Art Nouveau style. The two men collaborated from 1899 to 1901.