Isabella 48 Piece Stoneware Dinner Set is 100% made in Turkey. Stoneware is a clay-based material used in the production of plates and dishes that is fired and baked at 1100-1300 degrees. It is much more durable than ceramics and less porous than ceramics. Due to being baked at a higher temperature, it can be safely used in the microwave, oven, and dishwasher for many years.