With this décor the colours are melted into the glaze at 1000 degrees C. Here the glaze softens and the décor sinks into it, thus making colour 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 décor was tested by the Rosenthal Institute for material technology (IWT). It is dishwasher safe.