Robyn's Eigg is a cone 10 glaze that sits on the matte/gloss line of stull's map and contains titanium dioxide and rutile, which promote phase separation. I used this recipe as the base for all of the glazes in this collection, the only variable being the colorant. I mixed up a batch of Robyn's Eigg without the black copper oxide and substituted 5% and 10% wild pigments. All test tiles are made on a b-mix clay body.

ROBYN'S EIGG
Minspar: 51.5
Whiting: 27.5
EPK: 15.5
Silica: 5.5
Titanium Dioxide: 3
Rutile: 1
Black Copper Oxide: 2