This mortar and pestle are made of beautiful, durable and long lasting granite. The mortar has an attractive granite outer and an unpolished interior for the ultimate grinding experience. The pestle end is also unpolished to aid in grinding and is designed for comfort. Mortar has a large 6-inch diameter and is ideal for crushing and grinding herbs and making dressings. This set has side knobs for sturdier gripping. Hand wash recommended.