Mortar and Pestle weight 3.5kg to 4kg, Mortar Weight: 3.5kg, Pestle Weight: 0.5kg, Package Weight: 4kg to 4.5kg., Size: "4.5 inch" Material : Pure Stone, When the product is dry it is nearly white but when it’s wet it becomes black. These properties is only found in natural rocks not in artificial concrete. Our material is hard enough to crush the substance rather than be worn away by it. It’s not brittle like concrete, so our product does not break during the pounding and grinding. It’s also cohesive, so that small bits of the mortar or pestle do not mix in with the ingredients. It is used for pulverizing various herbs such as ginger, garlic, cilantro, peppermint leaves, etc. We choose Smooth and non-porous materials which does not absorb or trap the substances being ground.