... , carving and handicraft together purple clay tea potis very special teaware, which can be only found in China. It can keep the ... , carving and handicraft into one teapot. From scientific research, purple clay does not contain lead, arsenic, cadmium, chromium, and other toxic ... harm to human healthy, whereas the research proves that purple clay contains SiO2, Al2O3, Fe2O3, MgO, CaO, these minerals are ...