Gamblin Artist Colors are artist grade oil colors made from pure pigments and the finest refined linseed oil. The Gamblin factory is operated by a small company of oil painters led by Robert Gamblin. Considered America"s premiere colorman Robert Gamblin has made oil colors for the Smithsonian Institute. He formulates each color to preserve the unique textural and tinctorial differences among families of pigments. The Gamblin palette is composed of mineral colors including cobalt chemically pure cadmium and earth colors plus a full range of modern more transparent colors that retain their intensity when used in mixtures. When he teaches the history of artists" colors in art schools throughout the English speaking world Robert Gamblin"s message is simple: today the finest quality artists" materials made in the history of painting are available to discerning painters. Gamblin Artists Colors are made for painters who recognize artists" grade oil colors and appreciate good value. Please note: This is a single tube of paint, not a set.