Plastic

Plastics are man-made substances used in jewelry to imitate natural gem materials. Early plastics were organically derived, like the combination of casein and lye. With Charles Goodyear’s development of the vulcanization of natural rubber, we had vulcaniteBakelite was the first fully synthetic plastic to appear on the jewelry scene.
Bakelite Pepper Brooch. Photo Courtesy of Bonhams.

Bakelite Pepper Brooch.
Photo Courtesy of Bonhams.