I have been looking (unsuccessfully) for a tile that looks like this. I thought I had success until I went to lock in my choice at the tile shop and they said you can't put a white tile with that grey looking Carrara tile- on reflection they were right. The combination made the tile look dirty and the subway blue. Is this a porcelain tile on the floor? Or is it marble? If it is porcelain do you recall the brand / name?