If you are looking to make an outdoor stone tile for patio, you should use local stones since they do cost less and they are environment friendly. When it is installed, the natural stone can be durable and it is maintenance free. The cost of stones depends of which types that are found in your place. You can also use stones on driveways, walkways, front porches, pool decks and patios. You can use stones that have irregular shapes to make a meandering mosaic floor. If you want to achieve a uniform appearance, you should choose modular stones. The natural stones have different colors such as blue, red or gray. They can be used to form a pattern and an overall design for an outdoor patio.