Modelling clay

A bust of the sculptor Albert-Ernest Carrier-Belleuse, by Auguste Rodin (1882). Terracotta, originally modelled in clay.
Giant clay sculptures in Caruaru (Brazil).
Roses and seashells made of Paperclay (DECO)
Industrial clay: a clay model of a BMW

Modelling clay or modelling compound is any of a group of malleable substances used in building and sculpting. The material compositions and production processes vary considerably.