The Mabel 24-Piece Dinner Set is made of stoneware and is 100% Turkish-made. Stoneware is a clay-based material used in the production of plates and dishes, fired and baked at 1100-1300 degrees. It is much stronger than ceramic and absorbs less water compared to ceramics. Due to being baked at higher temperatures, it can be safely used in the microwave, oven, and dishwasher for many years.