Vintage necklace with blue black art glass silver tone beaded toggle clasp long length 30” inches. No clasp

I’ve come into a nice grouping of bohemian style necklaces some will be multi strand of some will have pendants some will be glass some will have rhinestones please let the pictures be your guide. All the necklaces will be in Wearable condition with fully functioning clasps. Pertinent details will be in the pictures and in the title.