Cobalt Blue & Yellow Lampwork Seed Beaded Necklace

Cobalt Blue & Yellow Lampwork Seed Beaded Necklace. In good preowned condition but there is one small chip out of one of the square beads (see circled pic). There is a mark on the toggle clasp but I could not identify it. The larger 3 beads are either ceramic or glass, mixed in with smaller beads and silver tone spacers. Silver tone toggle closure. Measures 18.5 inches long