Venetian Plaster
Venetian plaster is mainly used internally, on walls and ceilings, to give a finish that looks like polished marble, travertine, or limestone.
It can be used to create a highly polished, rock-hard, marble-like finish. Venetian plaster is especially useful on surfaces where marble panels could not be installed easily, and on surfaces that would be too expensive to have carved from real marble such as columns, corbels, and curved walls.