noun. Pottery or porcelain having a metallic sheen produced when metallic oxides are added to the glaze.

noun. A type of pottery having an iridescent metallic glaze

noun. pottery with a metallic sheen produced by adding metallic oxides to the glaze

"But the ceramics are not far behind, a feast of shimmering lusterware, deep turquoise stonepaste, and a plethora of blue-and-white works that include the 14th-century prayer niche—or mihrab—that visitors to the old galleries will remember."

clayware  pottery