Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. combination inorganic/organic material
7. composite material

Anotations

Scope note:

A composite material consisting of a body of sintered quartz coupled with an alkaline glaze surface, and used for decorating beads, amulets, figurines, and other small objects. It was invented in Mesopotamia or Iran ca. 4500 BCE, and produced through the mid-7th century CE.