Natural StoneWhether they're made from limestone, slate, granite or travertine, natural stone floors have one major asset: their variation. No two pieces of stone have exactly the same color, pattern or texture, and the differences create a visual depth that's hard to replicate. Stone also creates an elegant, gracious look that instantly makes a kitchen feel more upscale.Pros: Stone floors have been around for centuries, so it doesn't get more classic than this. Like tile and concrete, they're cool underfoot, a boon in hot climates. They're durable and require little day-to-day maintenance. And did we mention the natural beauty? Cons: Stone is expensive and not for the DIY-minded. The tiny crannies in its surface can trap dirt. Scratches and chips can be an issue with softer stone, such as travertine; slate's layers have been known to peel over time. Porous stone will need protective sealing at regular intervals.Cost: About $15 to $30 per square foot, uninstalled. How to Find the Right Stone Tile