Ingredient Amount
Bone Ash 33.00
Gerstley Borate 67.00
Add Amount
Copper Carbonate 8.00
Cobalt Carbonate 2.00


Remarkably, this versatile glaze is capable of producing a wide range of colors that are very receptive to atmospheric changes inside the kiln and outside in post reduction.

Published in "Fish Tales" by Lisa Merida-Paytes, in the Jul/Aug 2009 issue of Pottery Making Illustrated.
Through experimenting with the application of this glaze, I have been able to achieve a beautiful mottled surface with striking luster and opalescent color.  I have found that applying less is better–one thin coat then wiping the glaze off with a dry towel works best to achieve a matte, speckled surface.