The Mabel 24 Piece Dinner Set and Liana 26 Piece Breakfast Set are made of stoneware and are 100% Turkish-made. Stoneware is a clay-based material used for making plates and dishes that is fired and baked at 1100-1300 degrees. It is more durable than ceramic and less absorbent of water compared to ceramics. Due to being baked at a higher temperature, it can be safely used in the microwave, oven, and dishwasher for many years. When washing cutlery in the dishwasher, it is recommended to place knives in a separate compartment. It is also suggested to wash cutlery with leftover food residue in warm soapy water with a soft brush before placing them in the dishwasher. The rinse program of the dishwasher should not be used for cutlery. It is recommended to remove cutlery from the dishwasher before the drying cycle to prevent any damage from the high heat levels. Ensuring that cutlery is completely dry when storing is important. Over time, scratches and loss of shine on the surface of cutlery are normal due to regular use. The product is made of 18/10 stainless steel and is 100% Turkish-made.