A glass vessel is a container made of glass, which can be used for a variety of purposes. The three most common types of glass vessels are jars, beakers, and vials. Jars are typically cylindrical in shape with a wide mouth and lid, and are commonly used for storing food or other items. Beakers are usually tall and narrow with a flat bottom, and are often used in laboratories for mixing and measuring liquids. Vials are small containers with a narrow neck and are often used to store and transport small amounts of liquid.