S419 Semi matt gray, green and blue

glaze S419, detail
Color depends on thickness. Very thin glaze is gray, fairly thin green and semi matt. Thicker glaze becomes blue and semi glossy to glossy with small crystals. 1270oC with one hour at top temperature. Very good for incised decoration. Safe glaze.
   
potash feldspar NR 59,40
whiting 17,50
china clay 4,66
Albany slip (the real thing) 7,30
rutile 7,30
zinc oxide 1,16
quarts 1,46
cobalt oxide 1,46