 Hailstones can grow to and weigh more than .Unlike ice pellets, hailstones are layered and can be irregular and clumped together.Hail is composed of transparent ice or alternating layers of transparent and translucent ice at least thick, which are deposited upon the hailstone as it travels through the cloud, suspended aloft by air with strong upward motion until its weight overcomes the updraft and falls to the ground.