Efficient Grinding - The granite surface is non-porous, ensuring efficient and quick grinding with minimal residue left behind.. Durable Material - Made of solid granite, this pestle and mortar set is built to last, withstanding heavy use without chipping or cracking.. Versatile Use - The 12 x 9 cm size is perfect for grinding small and large batches of herbs, spices, and other ingredients for all your culinary creations.. Quality Guaranteed - This pestle and mortar set is dishwasher safe and comes with a 25-year guarantee, ensuring long-lasting quality and customer satisfaction..