Pigment
Pigments are the small ground particles that give paint its colour. Derived from animal, mineral or vegetable sources, pigment is held together by a binding agent such as oil in oil paint.
Joseph Priestley
by Ellen Sharples, probably after James Sharples
circa 1797
NPG 175
Margherita Scott-Ellis (née van Raalt), Lady Howard de Walden
by Cavendish Morton
mid 1910s
NPG x46654
Austin Osman Spare
by Austin Osman Spare
1937
NPG 6026
The Meeting, Royal Academy of Arts
by Leonard Rosoman
1979-1984
NPG 5740
Tony Bevan
by Tony Bevan
1992
NPG 6818
Derek Walcott ('The Sun Poet')
by Ross Wilson
1997
NPG 6400
Marc Quinn
by Marc Quinn
2006
NPG 6828
Rebecca Romero
by Nadav Kander
June 2008
NPG x132235