The basis of ceramic bodies is made up of sedimentary rocks resulting from the decay of volcanic magmatic rocks, clay minerals, in which quartz, feldspar, calcite, dolomite and other auxiliary minerals may be found. Clay's plasticity results from the so-called layer lattice structured aluminium hydro silicates. The way ceramic mass can be shaped and fired depends on its chemical and mineral composition. Based on these criteria, our product come in six categories.