Hematite, chromium green black An inorganic pigment that is the reaction product of high temperature calcination of principally chromium (III) oxide forming a crystalline hematite. Its composition may include any one or a combination of the modifiers Al2O3, Fe2O3, or Mn2O3.

Hematite (Fe2O3)

Spinels, chromium iron manganese brown An inorganic pigment that is the reaction product of high temperature calcination in which chromium (III) oxide, iron (III) oxide, and manganese (III) oxide in varying amounts are homogeneously and ionically interdiffused to form a crystalline matrix of spinel.

Spinels, chromium iron manganese zinc brown An inorganic pigment that is a reaction product of high temperature calcination in which iron (III) oxide, chromium (III) oxide, manganese (III) oxide and zinc oxide in varying amounts are homogeneously and ionically interdiffused to form a crystalline matrix of spinel.

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, 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.