Dishwasher safe: With this decor, the colors are melted into the glaze at 1000 degrees C. Here the glaze softens and the decor sinks into it, thus making color and luminosity indestructible. It is scratch- and wear-resistant. However, gold decors are not totally scratch-resistant by virtue of their natural material properties. This decor was tested by the Rosenthal Institute for Material Technology (IWT). It is dishwasher safe.