ca: ÒXID DE COBALT
es: ÓXIDO DE COBALTO
Cobalt oxides also known as Coloring Oxides are raw pigments from which prepared colors and stains are compounded. They can be used alone in all the usual coloring applications in bodies and in under and on-glazes. Their susceptibility to modifications by other materials is greater than that of prepared colors. Cobalt oxide appears as olive-green to red crystals, or grayish or black powder. It is used in the ceramics industry as an additive to create blue colored glazes and enamels and for centuries it was used as a coloring agent in pottery.