Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication (hierarchy name)
4. Visual Works (hierarchy name)
5. visual works (works)
6. [visual works by material or technique]
7. mosaics (visual works)

Anotations

Scope note:

Mosaics made from hundreds or thousands of tiny tesserae, typically of opaque glass. Often used to create pictures, jewelry, plaques, small boxes, and tabletops. Made from the 16th century to the present in Rome and elsewhere. The term was coined by British collector Sir Arthur Gilbert (1913-2001) in the mid-20th century.