Plastic Costume Jewelry
Celluloid was the first plastic used for jewelry. It was invented in 1868 to make billiard balls. By the early 1900s, manufacturers had a process for setting stones or metal into celluloid, and it became a versatile material for costume jewelry. The most sought-after plastic costume jewelry is made of Bakelite (thermosetting phenol formaldehyde resin), which was invented in 1907.
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