Spinels, aluminum chromium cobalt zinc blue

Spinels, aluminum chromium cobalt zinc blue is an inorganic pigment that is the reaction product of high temperature calcination in which zinc oxide, chromium (III) oxide, cobalt (II) oxide and aluminum oxide in varying amounts are homogeneously and ionically interdiffused to form a crystalline matrix of spinel. Its composition may include any one or a combination of the modifiers MgO or TiO2.