The Damascus Ceramic Knives are modern innovative designs to improve your culinary experience. The hardness of the ZIRCONIA (ZrO2) ceramic blades strength (2nd to diamonds) are corrosion & rust resistant and impervious to food acidity and stains. They provide a significant advantage to traditional steel knife blades. The micro sharp Ceramic blades will hold its edge much longer than traditional steel knife blades. The blades can go literally years without sharpening. Ceramic blades do not leave behind a metallic taste or smell. Your Ceramic - Ceramic blades are a environmentally friendly, chemically stable product. The non-stick surface is easier to clean than stainless steel and will not tarnish or absorb food odors, simply rinse with soap and warm water.