Venetian blown glass bead shapes like a oval (hollow inside). Blown in the furnaces of Murano. Distinctive color stripes of translucent glass blown and twisted at the same time to give the spiral bi-color. Size is about 30mm or little less than 1 1/4 " long and15-17mm diameter, though it varies are they are individually blown by artisans in Murano. No two are ever exactly alike. This one features Herb Green and Amethyst with stripes of Aventurina.