Art Noveau is an art movement, which originated at the end of the 19th century and nominally ended in the beginning of the 20th century due to the outbreak of the World War I which stopped the development of art in most European countries.
Art Noveau style has natural, smooth lines and motives, it rejects symmetric, geometric and sharp shapes.
Designers, artists, jewelers and other masters of the Art Noveau era gave preference to natural patterns and motifs, muted tones — dusty rose, pale gray, the color of wilted grass. Art Noveau sought to bring all spheres of human life to a single area of beauty, therefore, Art Noveau style affected architecture, painting, jewelry, ceramics, book illustrations, interior design and so on.
Jewelers who worked in the Art Noveau style used imitation of natural lines in their works — sweeping curves of leaves, petals, waves. Decorations were created in a form of flowers, insects, animals, fairies and nymphs. Jewelers gave preference to pastel tones, to such materials as enamel and ivory, semiprecious stones — turquoise, moonstone, opal, and pearls, precious stones played an additional decorative role in the creation of jewelry.
Among the most prominent jewelers of the Art Noveau era there are Georges Fouquet, Lucien Gaillard and René Lalique.
Stunning Art Noveau brooches:

Rene Lalique, "Woman-dragonfly", 1897-1898.

René Lalique, a brooch-pendant with the image of Alice Ledru, the wife of Rene Lalique, 1900.

Other Rene Lalique's brooches:

Jean Fouquet by a sketch of A. Mucha, a brooch, 1899-1900.

J. Fouquet by a sketch of A. Mucha, a brooch

Georges Fouquet by a sketch of A. Mucha, a brooch with a hornet, 1901 (gold, enamel)

Georges Fouquet by a sketch of A. Mucha, the "Orchid" brooch , 1900 (gold, enamel, rubies, pearls)

Lucien Gaillard, a brooch

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