R626 Black with brown or blue dots. A very good glaze. Apply rather thick. Works well in oxidation an then gives a semi transparent to opaque glaze with a lot of blue. In reduction it gives a more opaque glaze. You can use it on white porcelain to dark brown stoneware clays. On brown clays it must be very thick to give blue patches. potash feldspar NR 38,57 whiting 5,71 barium carbonate 8,57 talc 2,86 ball clay 302 8,57 quartz 22,87 ilmenite 7,14 zinc oxide 5,71 **********.