A glass mortar and pestle is a versatile tool used for grinding and crushing substances. The mortar, a bowl-shaped vessel, and the pestle, a cylindrical tool, are both made of glass. Glass mortars and pestles are inert, non-reactive, and easy to clean. They are commonly used in laboratories for grinding chemicals and preparing samples, as well as in culinary settings for crushing herbs and spices. With the pestle rotated or pressed against the mortar, substances can be effectively ground to the desired consistency. Glass mortars and pestles offer durability, ease of use, and reliable performance for various grinding and blending tasks.