With the beginning of the industrial era, several synthetic materials were discovered that were perfect for creating colorful, lightweight, and inexpensive jewelry. Most plastic jewelry was made by
a combination of molding and hand-carving. In the early 20th century, plastic jewelry was made as an imitation of natural materials, such as ivory and coral, but over time bolder colors and more fantastic designs were applied.
The 1920s were characterized by delicate floral necklaces and bracelets made from celluloid.
The boom of bakelite jewelry was in the 1930s, with sculpted bracelets, art deco items with polka dots and other geometric motifs, animal pins – horses, fish, dogs, and more – and necklaces with fruits and vegetables and other daily objects, such as cigarettes, school items, sports equipment, and more.