Spinels, copper green An inorganic pigment that is the reaction product of high temperature calcination in which copper oxides, silicon oxide and/or aluminium oxide in varying amounts are homogeneously and ionically interdiffused to form a crystalline matrix of spinels. Its composition may include any one or a combination of the modifiers vanadium oxide, titanium oxide, antimony oxide, lead oxide, and alkali and alkaline earth oxides.

Spinels, chromium green An inorganic pigment that is the reaction product of high temperature calcination in which chromium oxides in varying amounts are homogeneously and ionically interdiffused to form a crystalline matrix of spinels. Its composition may include any one or a combination of the modifiers silicon oxide, aluminium oxide, zinc oxide, zirconium oxide, lead oxide, boron oxide, cobalt oxide and the oxides and/or halides of alkali metals and alkaline earths.

Spinels, aluminum zinc zirconium An inorganic pigment that is the reaction product of high temperature calcination in which aluminum oxide, silicon oxide, zirconium oxide, and zinc oxide in varying amounts are homogeneously and ionically interdiffused to form a crystalline matrix of spinel.

Spinels, chromium cobalt blue green An inorganic pigment that is the reaction product of high temperature calcination in which chromium oxide and cobalt oxide in varying amounts are homogeneously and ionically interdiffused to form a crystalline matrix of spinels. Its composition may include any one or a combination of the modifiers silicon oxide, aluminium oxide, zinc oxide, lead oxide, boron oxide, zirconium oxide, phosphorous oxide and the oxides and/or halides of alkali metals and alkaline earths.

Spinels, cobalt manganese black An inorganic pigment that is the reaction product of high temperature calcination in which cobalt oxide and manganese oxide in varying amounts are homogeneously and ionically interdiffused to form a crystalline matrix of spinels.

Spinels, cobalt tin grey An inorganic pigment that is the reaction product of high temperature calcination in which cobalt (II) oxide and tin (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 Al2O3, Fe2O3, or NiO.