Ingredients

Ingredient Amount
Gerstley Borate 80.00
Nepheline Syenite 20.00
Add Amount
Cobalt Oxide 1.10
Copper Oxide 2.10
Yellow Ochre 7.80

Instructions

Published in "Successful Raku Firing" by George Juliano with Elizabeth Hudgins, in the Fall 1998 issue of Pottery Making Illustrated.
This glaze looks best when applied thin. I generally dip the pot once in a thin mixture. The glaze has a dark cranberry luster in appearance. I place pieces glazed with Copper Luster in a lidded trash can filled with newspaper, since this seems to make the colors shine a bit brighter.