Exposed aggregate is a widely popular choice for a decorative surface finish. It is a type of cement finish that exposes the aggregates of a concrete surface. Rocks, pebbles and sand are the most used aggregates in cement, though other materials such as granite and other stones may also be used to create a mosaic-like finish. The technique has been introduced in the early 20th century, but it is still finding its way to countless homes, offices, resorts, parks, and other commercial spaces around the world.