Pigments and colorants
Pigments and colorants are natural or synthetic substances used in ceramics to alter and enrich the color of glazes, engobes or clays. These compounds are added to clay or glaze mixtures to obtain a wide variety of shades, from soft, natural colors to vibrant, saturated tones. Pigments can be derived from naturally occurring minerals, such as metal oxides, or can be chemically manufactured to provide a wider range of colors and effects. The interaction between pigments and firing conditions, including temperature and kiln atmosphere (oxidizing or reducing), determines the final color obtained in the ceramic piece.
The use of pigments and colorants makes it possible to customize the creations, adding depth and complexity to the pieces. Pigments can be applied in various ways, such as mixed in the glaze base, applied directly on the surface of the clay before firing, or used to create specific designs and patterns through painting, silk-screening or stamping techniques. The correct selection and application of pigments is crucial to achieve the desired effect and to ensure the durability and resistance of the color once the piece has been fired.Interesting Fact
Some pigments, such as cobalt blue and copper green, have been highly valued throughout the history of ceramics due to their rarity and the intensity of the colors they produce. In ancient civilizations, these pigments were considered precious commodities and were often reserved exclusively for the decoration of luxury ceramics and ceremonial objects.Helpful Tip
Before applying pigments to a large piece or series of pieces, it is critical to test fire small samples to ensure that the final color is as desired. Pigments can react differently depending on kiln temperature and atmosphere, which can significantly alter the hue and saturation of the color.
