... company Pumice Character,1), Light in weight, high in hardness;2), Natural stone,non-polluting, non-radioactive;3), Acid resistance, Corrosion ... weight, it's good materials instead of ceramicite,haycite etc.2), Landscape: Big pumice arts can be put in garden or ... -white.(Normally brown mixed black and white mixed gray).Size:2-3MM,5-10MM,10-15MM,30-50MM,50-80MM,80-100MM ...