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. glass (material)
8. [glass by technique]
9. art glass (material)

Anotations

Scope note:

Trademark name for a type of glass developed by Tiffany and Company with an iridescent surface simulating that of excavated ancient Roman glass; this effect was produced by spraying the surface of the glass while hot with metallic salts.