Material: Natural Brazilian agate (for both mortar and pestle) Internal diameter Optional: 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm, 150mm, 160mm, 170mm, 180mm, 190mm, 200mm(Optional) Package Included: 1pcs Agate Mortar 1pcs Agate Pestle 1pcs wooden packing Note: 1) the mortar is made of natural agate mortar, so the color won't be the same as the picture. 2) to improve the grip friction of the agate mortar, the bottom of the agate mortar is not fine polished.