This is for a Vintage Necklace. Measures 18 inches long plus has a 3 inch long extension chain, made up of slightly graduated size faceted cut saucer shape iridescent ight blue crystal stone beads. with a rectangle blue Sodalite gemstone in center that measures 3/4 inch long,  also has a solid blue lucitte beads in between, a lobster claw clasp that works well, this has some small black stones in between in back so Not sure if was hand  made. In good conditon