Limited Edition: Venetian Glass Bead in our Dichroic Glass. They are quite large and beautiful about 42mm disc, lentil. A 2mm hole runs through the center and the shape is thicker at the middle, see the alternate picture. Use a single bead as a centerpiece of an exquisite Venetian Glass Dichroic Necklace. Note: Dichroic glass is glass containing multiple micro-layers of metals or oxides which give the glass optical properties which displays an array of different colors depending on the angle of view. It is high tech thin-film optics in an artist environment. Each bead will display different colors and no two are ever exactly alike. The Murano Glass is first shipped to the US for the vacuum application of dichroic and then returned to Italy to be use in our beadmaking.