Vintage 1930's Round Marble Butterscotch Bakelite Beaded Dangle Screw Back Earring A vintage 1930's Round Marble Butterscotch Bakelite Beaded Dangle Screw Back Earring is a Classic Piece of Jewelry, Often associated with the Mid - 20th Century. The necklace features beads made of Bakelite, from the 1930s or 1950s. Bakelite, an early plastic, was a popular material for jewelry during the Art Deco era. A type of plastic known for its warm, amber-like color and durability, and the beads are strung together with a barrel clasp for closure. The "butterscotch" refers to the warm, yellow-brown color of the Bakelite beads, reminiscent of the candy.