Celadon Blue or Goryeo Celadon glaze was developed in 10th and 11th century Korea. The finish is made from a feldspathic rock with additions of clay and flint rock and small amounts of iron oxide as pgment. This finish is excellent for revealing carved designs in the glaze or just underlying the glaze on the clay surface. This finish relies on the right combination of types of clay, amounts of iron oxide, and firing atmosphere. When all of these conditions are just right, the Celadon Blue color develops.
Scroll down to see some examples of works glazed in Cabernet.