Real stone floors such as flagstone, slate, marble, and travertine are wonderful materials that can be incorporated into your kitchen design.The real material is more expensive than a porcelain or ceramic tile, but for high end, luxury kitchens, there is no substitute.Remember to keep the layout and design of the floor simple.
Make sure you pick a grout color that blends well with the color of the stone and does not call too much attention to it.Also, make sure the grout gets sealed with a good quality grout sealer.