There are two pigments of this denomination, the one a compound of cobalt blue and chromic yellow, which partakes of the qualities of those pigments, and may be formed on the palette, - the other, an original pigment prepared immediately from cobalt, with addition of oxide of iron or zinc, which is of a pure but not very powerful green colour, and durable both in water and oil, in the latter of which it dries well. Rinmann's green is of this kind. Its habits are nearly the same as those of Cobalt blue.