Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. inorganic material
7. mineral
8. diamond (mineral)

Anotations

Scope note:

Natural diamond material that has undergone human intervention to temporarily or permanently alter its appearance. Examples of treatments include: optical coatings, filling fractures, pressure heating, irradiation, laser drilling, high pressure and high temperature treatment (HPHT) or any other physical or chemical process. This does not include cutting, grinding or cleaning of the diamond.