This is a Wonderful Old Art Deco Necklace in mostly an Emerald Green Color with 5 Triangular Center Pieces and then Oval Beads in some type of Green Plastic, along with Black Spacers. I tested it with Simichrome and although it left Yellow color on the paper towel, it is too light to be Bakelite, so I am unsure of what the actual Plastic type material it is made of.
The Necklace measures 18 1/2" in length and closes with a Green Plastic Barrel clasp with inside brass. It is in Very NIce Vintage Condition.
Art Deco Green & Black Old Plastic Necklace