Cone 6 oxidation: Oyster is a variegated cream/brown glaze that exhibits gray/purple undertones and breaks brown.
Cone 10 reduction: Color changes to a variegated brown/cream. Increased movement.
TIP: If your kiln fires cool, the glaze finish may be brown. An iridescent finish may be achieved by re-firing or if your kiln fires hot. If you like Green Tea and Capri Blue combos, then try oyster because these three glazes are in the same glaze family.