Abstract: Ceramic decoration coloring substances substantially containing a zirconium pigment of the host lattice or inclusion type and a glass flux at a pigment volume concentration (PVC) of at least 30% have an increased color saturation C* if the glass flux comprises at least 71 wt. % PbO. Preferred decoration coloring substances have a PVC in the range from 40 to 70% and a PbO content of 75 to 85 wt. %. The decoration coloring substances are especially suitable for production of decorations, burned at 1000 to 1250°C, with increased color saturation C*.

Abstract: The resistance of tableware decorations to cutlery scratches can be improved by using a decoration coloring substance whose coloring component is a molecular sieve charged with a metal selected from V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ag, Au, Ru, Rh, Pd, Os, Ir, Pt and/or an ion or a compound of the metal. The coloring component is preferably an aluminosilicate or silicalite charged with Au, Pt, Pd or Cu.

Abstract: A decorative orange paint is obtained by using 15 to 30% by weight of an orange pigment together with 70 to 85% by weight of a glass frit. The orange pigment comprises 10 to 13% by weight of alkali metal oxide, 10 to 14% by weight of ferric oxdide, 30 to 35% by weight of aluminum oxide, and 40 to 45% by weight of silica. the glass frit comprises 35 to 60% by weight of silica, 15 to 35% by weight of boron oxide, 3 to 8% by weight of zirconium oxide, 2 to 8% by weight of aluminum oxide, 10 to 18% by weight of sodium or potassium oxide or a mixture thereof, and 2 to 6% by weight of lithium oxide.