Flagstone is the general name for natural sedimentary rock stones such as: slate, travertine, limestone, sandstone, quartzite, and bluestone. Flagstone comes from different quarries around the nation and each stone has their own distinctive texture, and colors such as browns, blues, grays, and reds. The stones are cut out in small to large square or irregular shaped slabs that are perfect for paving areas such as walkways, patios, stepping stones, and pool decks