Gamblin 1980 Oil Colors are made with the same dedication and pure pigments that are in the Gamblin Artist's Oils. Formulated with pure pigments, the finest refined linseed oil and marble dust (calcium carbonate). Artist experience colors that are true, without homogenized texture or muddy color mixtures. Using both traditional raw materials and processes ensures that artists experience the luscious working properties that they expect from their oil colors. 37 ml tube