Swissmar MP-004 Cilantro Granite and Marble Mortar and Pestle Made of premium quality half-polished G1 Granite, natural and M10 Marble Rose River Mortar is beautifully designed with two-tone material  Granite and Marble Mortar is heavy, well balanced and suitable for rigorous pounding and grinding Pestle is heavy yet comfortable and crushes, grinds and mixes herbs or spices with ease Natural non-porous quality; allows for extracting the oils from herbs and spices without being absorbed into the stone