Cone 06 oxidation: Dark Grey will fire matte without addition of a clear glaze. To intensify color or for use on dinnerware, apply clear or matte clear glaze.

Cone 6 oxidation: Color concentration occurs. Recommended clear glaze is SW-004 Zinc-Free Clear.

Cone 10 reduction: Color shifts to brown unglazed. Recommended clear glaze is SW-004 Zinc-Free Clear.