Cone 10, clear gloss glaze
4321 is the base glaze for all of the tests in this collection. Each change in color is due to the addition of a wild pigment.  

4321
Nepheline Syenite - 40
Whiting - 20
EPK - 10
Flint - 30
Wild Pigment - 5, 10, 15, 20
Water - 60