Vintage faceted black bead necklace

Nice vintage necklaces. The beads are faceted plastic. Vintage condition. Has two beads fused together and I’m not sure if that’s an original design, a flaw or someone possibly broke it originally and then stuck it together. Could use a gentle cleaning to sparkle even more. Nice for a shadow box or wear for evening or add a bit of sparkle to a casual look. Please see photos for the best description thank you! I have several similar necklaces, some are glass and I offer a 20% discount on two or more items.