Export-deepened agate mortar, made of natural Brazilian agate. Among its chemical compositions, SiO 2O accounts for 97.26WT%, and MgO/CaO/Mn 2O O < unk > accounts for 2.74WT%. Physical properties, specific gravity 2.65KG/DM ³, bulk weight 1.5KG/L, Mohs hardness 7.2 - 7.5, elastic modulus > 70GPA It is gray, gray and other natural prim ary colors.
