Decoration of glass by a thin layer of golden or luster solutions demands a high quality of the glass surface, decorating solutions, as well as technological procedure. In the presented work the authors monitored causes of defect formation for two types of luster decorations and two types of commercial glasses gliding preparation with various Ag contents. The results have shown that in case of unsuitable technological process the layers on the glass demonstrate insufficient adhesion, colours different from the required shade or matt spots. The resistance of golden decorations against damage was further tested by washing of decorated samples in dishwasher. In case of alkaline washing the decorations were more resistant on sodium-potassium glass and on a previously dealkalilsed glass surface.
