Beautiful Vintage/Antique Murano Venetian Custard Millefiori Glass Beaded Necklace. Barrel shaped larger beads with round beads. This has a Czech clasp on it but I think it's a replacement. See pictures with red arrows.
Will probably need restrung at some point. The largest beads measure 1/2 inch long and is just over 1/2 inch wide.
The smallest beads are 1/2 inch long. Total length is 18 inches long.