G627 Turquoise silky matt

A very loved dark turquoise blue glaze. If too thick it will run and be very dry and not good. Works best on very fine porcelain clays. I use a French clay from Limoges. 1260-1280oC with one hour at top temperature.
 
glaze G627, small bowl
potash feldspar NR 51,06
barium carbonate 21,28
china clay 8,51
wollastonite 17,02
lithium carbonate 2,13
copper oxide 1,70


G620, a variation of G627

 
potash feldspar NR 48,48
barium carbonate 20,28
china clay 8,07
quarts 9,74
whiting 10,14
lithium carbonate 3,25
copper oxide 1,62