Quartzite is a natural quartz material that is quarried like granite and marble. It is a natural product that has a very hard surface that is resistant to scratches and damage. Many types of quartzite are translucent and can be backlit for dramatic eﬀect. Quartz slabs are manmade which are manufactured using crushed quartz and resin. The beneﬁt of quartz is that the colors tend to be very consistent and there is a vast array of colors being produced. Recently, manufacturers are producing marble-like quartz and other designer surfaces giving great design possibilities. Sandstones vary widely in color due to diﬀerent minerals and clays found in the stone. Sandstone is light gray to yellow or red. A dark reddish brown sandstone, also called brownstone, has commonly been used in the northeastern United States and eastern Canada. Bluestone is a dense, hard, ﬁne-grained sandstone of greenish-gray or blueishgray color and is quarried in the eastern United States. Limestone is a widely used building stone with colors typically light gray, tan or buﬀ. A distinguishing characteristic of limestone is the presence of fossils that are frequently visible in the stone surface. Travertine is a type of limestone that can be left in its natural state with no polishing. Limestone varies in hardness and is porous with many visible holes, often ﬁlled with epoxy. Travertine is one of several natural stones that are used for paving patios and garden paths. It is sometimes known as travertine limestone and as travertine marble. The stone is characterized by pitted holes and troughs in its surface. It comes in a variety of colors from grey to coralred. Travertine is most commonly available in tile sizes for ﬂoor installations Slate is dark green, black, gray, dark red or multi-colored. It is most commonly used as a ﬂooring material and for roof tiles and is often distinguished by its distinct cleft texture.