C420 Blue and yellow crystals

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A semi glossy crystal glaze based on frits and zinc. It tends to run not too much, but spray it thinner near the bottom of the pot. 1260oC with ¾ hour at top temperature. Usually it behaves very good. The crystals can be very complex and large. Use it alone or together with one of my 6713-glazes. If you reburn it the crystals will be smaller.

 

boric frit MOK1 17,50
zinc barium frit 90420 26,40
quarts (flint) 23,10
zinc oxide 22,10
china clay 4,30
bentonite 3,30
rutile 3,30
cobalt carbonate 1,30
manganese carbonate 2,00
glaze C420, top of vase glaze C420, detail glaze C420, bottom of vase
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