Turkish Travertine is a beautiful natural tile that comes in 3 different grades. These can be used for all sorts of hardscape project including; patios, pools, decks, porches, foyers, interior floors, backsplashes, fireplaces, outdoor showers, steps and caps. The three different grades are separated by premium, standard or commercial. Where premium offers the greatest selection of colors free from black or gray discoloration and are free of any holes due to a double filling of hole process and a strict selection of which pieces of travertine make the cut. Standard grade offers similar quality to the premium grade but you may see some more color striations or swirls. The commercial grade is known to have large color variations which may include gray or black markings and also has small unfilled holes with small defects. Depending on the look or project, each grade can be useful.