Pigments for the colouring of building materials based on cement and/or lime. Specifications and methods of test|Mechanical properties of materials, Extenders, Construction materials, Chemical composition, Environmental testing, Determination of content, Colour tests, Performance, Chemical properties, Cements, Physical properties of materials, Concretes, Extraction methods of analysis, Compressive strength, Chemical analysis and testing, Particulate materials, Chlorides, Halides, Pigments, Aqueous dispersions, Solutes, Conformity, Quality control, Mixtures, Mortars, Lime