Ingredients

Ingredient Amount
Bone Ash 1.77
Zinc Oxide 24.56
Ferro Frit 3134 49.12
Minspar 200 Feldspar 14.73
Silica 9.82
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Black Copper Oxide 4.13
Rutile 3.93

Instructions


The glaze combination used on the pots in this photo is Crystalline Blue applied to the entire pot as the first glaze, followed by Lehman Blue applied to the top 80% of the exterior, followed by Trout applied to the top 65% of the exterior. The pieces were fired to cone 9–10 in reduction in a gas kiln.

Originally a glaze for oxidation crystalline firings, this glaze begins melting at around cone 6/7. Apply this glaze by dipping. It works well layered in combination with other glazes. When used on its own, it is a black-spotted sage-green color.

This recipe was shared by Dick Lehman in the April 2020 issue of Ceramics Monthly.