A ceramic pigment particle is an inorganic white, black or colored solid that is insoluble in the matrix into which is incorporated and does not react chemically or physically with it. Thus one of most important characteristics of ceramic pigments is their thermal stability at high temperatures and their chemical stability in respect to phases, even liquid, forming during firing of glazes or bodies as a result of the sinterisation process and melting.
Ceramic pigments are special solids, reduced to particles that can be colorful, black or white. These elements are widely used to color tiles, tableware, sanitary ware, glazes and glass and they are mainly used by producers of raw materials and semi-finished products for the ceramic industry.
The ceramic pigment, basically, gives the color and does it through the simple physical dispersion in what it has to color, without being dissolved in the liquid phase that is formed at high temperature during firing.
Among the most important pigments are: praseodymium yellow, cobalt blue, iron, selenium and calcium-tin-chromium pink, iron and manganese brown, chromium-iron-cobalt black.