Cobalt Aluminate Blue Spinel, an inorganic pigment, is a reaction product of high temperature calcination in which Cobalt (II) Oxide, and Aluminum (III) 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 Li2O, MgO, SiO2, TiO2, or ZnO.

Mason Color Works has conducted testing on its complex inorganic colored pigment 7389 Catalina alongside two additional pigments used in the pool industry. Testing reveals 7389 Catalina has superior degradation resistance properties to chemicals used in maintaining pools, versus competitor pool colors.