Sandstone is a type of sedimentary flagstone made from buried sand that was naturally cemented together from a porous rock. Consisting of sediment particles, cement, and matrix, sandstones vary in color by its composition, usually from beige to red, with a characteristic of a contemporary or earthy look. Other elements typically create colors in sandstones. For example, more clay leads to shades of blue or gray, while more iron oxide or rust leads to shades of red, and more manganese leads to shades of purple. Sandstone is used as either crushed stone in the construction of buildings and road structures or as dimension stone in the construction of blocks and slabs that are cut into specific sizes.