Marble

A type of stone traditionally used in sculpture and architecture. A metamorphic rock (metamorphosed calcite or dolomite), finely grained, dense, with a nondirectional structure, capable of taking a high polish, and often irregularly veined and colored by impurities. Confusingly, the name marble is sometimes used to refer to any stone that takes a polish, although such stones may include alabasters, granites, and serpentines, as well as true marbles.

Mottling or streaking that resembles the veined texture of marble is called marbling. (Artlex.com)

Canadian Heritage University of Regina Mackenzie Art Gallery Mendel Art Gallery Sask Learning