A natural mineral, it was unpopular in oil paint because of its coarse granules, but worked well in water-based media. It faded from use after a brief revival in the 19th century.
Kazan
A beautiful, intense green used by the van Eycks, Tintoretto, Domenichino, and Renoir, it was never popular in oil paints, and quietly died out.
The Eclectic Light Company 