Clay earth pigments are naturally occurring minerals that have been used since prehistoric times as pigments. The primary types are
* ochre
* sienna
* umber Earth pigments are known for their fast drying time in oil painting, relative inexpensiveness, and lightfastness. Caveman paintings done in sienna still survive today.
Clay earth pigments are naturally occurring minerals that have been used since prehistoric times as pigments. The primary types are
* ochre
* sienna
* umber Earth pigments are known for their fast drying time in oil painting, relative inexpensiveness, and lightfastness. Caveman paintings done in sienna still survive today.