Natural Onyx Mortar and Pestle Beautiful Round Marble Stone, Spice Natural Onyx Mortar and Pestle Beautiful Round Marble Stone, Spice Traditional Stone Spice Grinder on the Floor Stock Photo Image of Solid Stone Unpolished Granite Spice Herb Grinder Kitchenware Crew Natural Onyx Mortar and Pestle Beautiful Round Marble Stone, Spice The Best Grinders For Indian Spices. The simplest of tools; use the pressure of your palm to roll the ball and pulverise your spices. Tested and approved by our London kitchen. Carved from solid blocks of marble with a marble ball. Ideal when paired with our Stone Pestle and Mortar. Diameter: 18cm Height: 13cm