The Art Nouveau period ranged from 1890 through 1915. Popular types of jewelry included: necklaces, dog collar necklaces, hair ornaments, pendants, lockets, bracelets, rings, brooches, and stomachers. This jewelry had naturalistic, curvilinear design elements often portraying animal and female figures. Gemstones, ivory, enamels, and molded glass were implemented in Art Nouveau jewelry.