Along with Ochers and Umbers, Sienna pigments were first used in pre-history.  Siennas take their name from the Renaissance city state of Siena, in modern day Italy.  In its natural state, the pigment is referred to as Raw Sienna, and is a rich yellow-brown.  Raw Sienna is among the most useful colours in an artist's palette as it produces warm foundation tints, and is invaluable for landscape and portrait painting. 

Lightfast, Permanent, Non-toxic, Non-staining, Semi-granular, Semi-transparent

Pigment Number: PBr7