All pieces of the SABLO series consist of a unique mixture of colored clay, quartz, minerals like calcite, as well as oxides, and have been formed in the casting process. The high firing temperatures make stoneware more stable than clay. The colors and shapes, as well as the appearance of the glaze, can vary; therefore, each piece is unique and may have individual structures and shades. All tableware pieces of the SABLO series are fired at very high temperatures and do not have to be glazed all over. They can be used in the microwave and are dishwasher safe.