This is an art deco era necklace made of clear and black crystal glass beads. The beads are in different faceted shapes - barrel, elongated, disc and diamond. It has a length of 16 1/2, laid out straight - it will fit more like a choker unless you have a thin neck. It has a screw type closure. It is in very good condition with no signs of wear. This is a nice example of 1920s/30s glass jewelry - wonderful deco shaped beads!