A unique multi-purpose clay. Not recommended for microwave ware as iron oxide stain gets hot. 

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Characteristics:
Cone: 6
Wet Color: Black
Fire Color
                Oxidation Cone 6: Black
Texture: 
Average Shrinkage 
                Oxidation Cone 6: 11,5%
Average Water Absorption: 
                Oxidation Cone 6: - than 0,5%