http://www.forrestrace.com/mix-tiles/

Natural Stone Tiles – Advice From An Expert
Travertine, granite and slate are the main types of natural stone tiles available, and what follows is a brief description of each of those types…
Travertine: This is a form of limestone, which is porous and contains many holes. Though you might wonder why you would want slight holes in your tiles, the aesthetic look is actually very appealing. Travertine is available in a variety of shades of browns, from coffee to light tans. You can use these tiles on both floors and walls.
Granite: This is the most commonly used type of natural stone tile, because it is the most durable. Some people think that it does not look nice enough and that there are not enough different styles, but that is really just a case of personal preference. For floors and outdoor purposes, it really is the best option.
Slate: These tiles are easy to cut and shape however you want. They are mostly gray in color, but there are some nice variations to choose from too. They are best used for walls and countertops. The reason being that the thickness of them, even within the same box, will probably vary slightly..
Remember, that using natural stone tiles is not an either / or decision that you have to make. You can use in a mixture of travertine, granite and slate tiles in the same room to very good effect. You do need to exercise some caution though, and should get a second opinion on your design ideas before getting started.
Natural stone tiles are easy enough to work with so long as you have the right equipment. Obviously, you need to take a different approach than you would when using ceramic tiles though, so if you have only worked with ceramic tiles before, then you need to do some research before you start cutting and fitting natural stone tiles. If you want to be absolutely sure, then calling in a professional is recommended.
Zoro Mosaic Tiles – White/Sky Blue/Mid Blue Mix Tiles – 2605