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:

A type of art glass characterized by large air bubbles of various sizes combined with larger unsifted glass particles, and cased with heavier clear glass. Cluthra glassware is made from a lump of crystal glass on a blowing iron, which is rolled across a marver that had been sprinkled with powdered glass of any desired color. It was developed at Steuben Glass Works before 1930 as a variation on the very similar Clutha glass.