This is a very colorful necklace made up of different sizes and shapes of Italian millefiori glass beads. The larger beads measure 5/8" X 3/8" and the round ones measure 7mm. They are all knotted in between. The clasp and the extension chain are made of silver tone metal. The length of the necklace including the chain is 19.50". There is one large blue bead that I have shown in the second to last photo where there looks like there is a large chip but maybe this is just how it was made.
Colorful Artist Made Italian Glass Bead Necklace