Faux pearl glass beaded necklace

in excellent condition I'm not to sure if the black beads are glass or crystal. I used my diamond tester pen on them and it came back as a 6 which would put it in the crystal category since low 4-5 would be glass. but as i said I'm not to sure. gold tone clasp faux pearl silver tone smaller beads Rhine stone spacers . casual formal elegent feminine vintage costume jewelry jewelry necklace circular not a light necklace but not super heavy either. unknown brand necklace length is approximately 9.5 to 10 inches beads very in size please see pictures for more details on sizes.