River rocks, lava rocks, pea gravel, sonoma gold and crushed limestone can all function as decorations in a garden. Some types of rock are better suited to certain purposes than others.
Smooth river rocks are ideal for water features and can create designs and borders. Lava rocks are available in different colors to accent certain areas. Lava rocks have natural weed prevention properties.
Pea gravel can work as a path covering, and can help improve drainage in some situations. Sonoma gold's color works well in landscapes that do not have a lot of vegetation, as its appearance evokes a desert environment.
Crushed limestone is suited for driveways and paths, as it packs well and holds stepping stones securely.