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 blue with white filigrana striping.