Genuine Venice Graduated Murano Sommerso Aventurina Glass Bead Strand Necklace in Blue, 20+2" Extender Genuine Murano glass bead necklace from Venice, Italy 8mm, 10mm, 12mm, 14mm and 16mm graduated strand of Sommerso (meaning submerged colored glass inside clear glass) beads. Blue glass beads infused with goldtone veins and flecks 19 inches long, plus 2 inch extender with 14k gold plated lobster clasp glass beads knotted with silk