Fritware

Fritware, also known as stone-paste, is a type of pottery in which frit is added to clay to reduce its fusion temperature. The formula may include quartz or other siliceous material. An organic compound such as gum or glue may be added for binding. As a result, the mixture can be fired at a lower temperature than clay alone. A glaze, processed at a higher temperature, was then applied on the surface to harden the object.