Black bangle bracelet, likely Bakelite or thermoset plastic

This type of chunky black bangle bracelet appears to be from the mid-20th century, likely made of Bakelite or another thermoset plastic material that was popular during the 1940s-1960s. These materials were widely used for costume jewelry during this period as alternatives to more expensive materials like jade or onyx.

Vintage plastic bangles have become highly collectible among vintage fashion enthusiasts and costume jewelry collectors. Their durability, distinctive appearance, and connection to mid-century fashion make them appealing to collectors who appreciate vintage accessories. These pieces are particularly valued for their bold, statement-making design and the characteristic high-gloss finish that develops a beautiful patina over time.