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. garnet (mineral)

Anotations

Scope note:

A synthetic gemstone that has a structure same as that of a garnet, but has no chemical counterpart in nature. It has been produced since 1969 in a range of colours, but especially as a colourless stone to simulate a diamond.