All parts of the SABLO series are made from a unique blend of colored clay, quartz, and minerals such as calcite and oxides. They are shaped using a casting process, and the high firing temperatures make stoneware more durable than clay. The colors and shapes, as well as the appearance of the glaze, can vary, making each piece unique with individual textures and shades. All dishware in the SABLO series is fired at very high temperatures and does not need to be glazed all over. They are microwave-safe and dishwasher-safe.