Purple and black slag glass bead vintage necklace

Purple and black slag glass bead vintage strand necklace. Has great weight and feel, very pretty in person! There is no clasp, so no metal in this necklace for folks that have metal allergies. the beads are all faceted and made of purple and black glass, likely slag glass and potentially art glass from the 1920s or 1930s. Excellent shape, no broken beads and minor flea bites typical of this type of necklace. Length is 30".