Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by function]
6. colorant (material)
7. pigments
8. [pigment by composition or origin]

Anotations

Scope note:

Natural-coloured substances produced by living organisms, including microorganisms. It includes pigments that affect the coloration of plumage in birds and pigmentation of materials caused by biodeterioration.