It's a porcelain tile with the mosaic strip that comes with this tile. These materials come from my store The Floor Depot in Richlands VA. It's a good quality product that comes in various shades and sizes. I do all my own custom tile work to suit the needs of the Homeowners. I would be happy to help you get the materials you need if you like or even build a custom shower for you. I'm new to this app but I'm on Angie's list under my remodeling Buisness name Rife Remodeling and Flooring and I have more info about my products there. Just let me know what I can help with and I will do the best I can to help you.