Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by function]
6. coating (material)
7. [coating by location or context]
8. glaze (coating by location)
9. ceramic glaze
10. [ceramic glaze by technique]

Anotations

Scope note:

Thin metallic films that produce an iridescent effect on ceramics or glass. Luster glazes have been used since the 9th century in the Middle East ceramics. Spanish and Italian majolica pottery was produced by a multistep technique in which the metallic glaze was applied over a fired glaze then the ceramic was refired to adhere the two layers. The thin metallic layer is obtained with either reducing salts or a reducing atmosphere. By the 19th century, a single step technique was developed in England that produced an overall luster glaze. Various colors are obtained by the addition of minerals.