Handmade, blown Venetian glass bead made in the furnaces of Murano. Vibrant stripes of translucent glass blown are twisted at the same time to give the spiral effect. The size is about 30mm or little less than 1 1/4 " long and 15-17mm diameter, though it varies are they are individually handmade by artisans in Murano. The hole size is about 2-3mm. No two are ever exactly alike. The colors on this one are Multi colors of red, aqua, green, topaz and black.