Daily
Free Gifts
Bookstore
Education
Galleries
Ceramics Monthly
Pottery Making Illustrated
Potters Council
Daily Home
Features Archive
Browse Topics
Glossary
Video
About Us
Sign Up
Glossary Details
Co3O4—calcined cobalt carbonate—twice as powerful—coarser than carbonate, and may give mottling in glaze. Works well for underglaze brushwork, with few crawling problems. Toxic in inhalation and ingestion.
Back to the Glossary