Spectrum 1405 Blue Oyster From  £19.89

I get a lovely cool grey-blue glaze with a satin matt opaque finish. I use the glaze on Scarva paper clay in an electric kiln at 1220 C. I don't get the warm mauve colour nor tiny black specs/ pin holes shown in the picture which I'm guessing comes from a coloured clay. I brush the glaze on very thickly only adding to wet areas as I go. Spectrum's brush on glazes are great for this because you get a nice smooth finish without streaky brush marks.