It was discovered in antiquity that Raw Sienna could be roasted to produce a warm, rich orange to reddish brown.
Particularly valued for its transparency, it is one of the small group of ancient pigments whose beauty and permanence have not been equaled by any modern industrial substitute.
Rated ASTM 1 in all of our media and is on the list of approved pigments. Good grades, unclouded by filler or other pigments, are worth seeking.
Tinting strength varies with different grades, as does clarity of hue and transparency. Choose carefully, a clear fiery Burnt Sienna can be invaluable. Non-metallic preservatives.
