A black powder which gives red, brown, purple or black tones to clay bodies and glazes. A strong flux when added in large amounts to clay bodies. A black 40-60 mesh material often used for speckling in clay and glazes.
A black powder which gives red, brown, purple or black tones to clay bodies and glazes. A strong flux when added in large amounts to clay bodies. A black 40-60 mesh material often used for speckling in clay and glazes.