. . " oxide, especially TiO.sub.2, iron oxide, especially Fe.sub.2O.sub.3, cerium oxide, zinc oxide and aluminium oxide, and silicates, especially aluminosilicates and borosilicates, are most particularly suitable.The mineral core may be colored, where appropriate or desired.The organic dyestuff may be as defined above.The binder of the composite pigment may be of any type provided that it allows the o" . .