This isn't your ordinary mortar and pestle – it's made from natural 'MuYu' stone, a special type of stone from China known for its beautiful wood-grain patterns and musical properties (it 'sings' when struck). It's seriously heavy and solid, weighing about 1.65 kg (over 3.5 lbs), which makes grinding effortless. The inner bowl is about 7 cm (2.75 inches) in diameter and 10 cm deep, a good size for small batches of spices, herbs, garlic, nuts, or grinding pills into powder. The stone is polished smooth, making it easy to clean. Beyond being a functional kitchen tool, it's believed that MuYu stone contains beneficial minerals like iron, and some say food ground in it stays fresh longer. Each piece is unique because of the natural stone variations. A beautiful, durable, and conversation-starting piece for any kitchen or for those into traditional medicine preparation.