Kaolin or China clay is nearly white in color. It is distinguished from other industrial clays based on its fine particle size and pure coloring. Its ability to disperse in water makes it an ideal pigment.

The primary constituent in kaolin is the mineral kaolinite, a hydrous aluminum silicate formed by the decomposition of minerals such as feldspar.

The white color of the mineral can either be naturally occurring, or can result after processing which removes minerals and other color-bearing compounds. The small particle size of the mineral contributes to its white color by scattering light.

The primary use of kaolin is in the paper industry, China, Porcelain, Tableware, Paint, Rubber, Cable Insulation, Specialty films and Fertilizers.