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]

Anotations

Scope note:

A type of glass characterized by its mainly greenish, turquoise, yellow, brown-green, or smoky black color accented by air bubbles, streaks of pink and white, and speckles of aventurine. To produce Clutha glassware, a worker used a gather of pale ruby or pale yellow glass, then rolled it over a marver lightly sprinkled with bits of colored glass and mica flakes. The gather was reheated and blown and tooled into the finished product. It was originally made by James Couper & Sons, Glasgow. It is called "Clutha" from Gaelic for "cloudy."