The boarder is large scale cement like color porcelain tile with matching grout color, and the middle of the floor is natural pebble, also with matching grout. Just as a side note, my design theme was inspired by nature. Here my design intention was to create an abstract suggestion of a river run, as though bathing in a river. This was the reason for selecting this long run of the stone pebbles in the middle of the floor, which continues without any interruption into the glassed shower area. This is a bath room for a guesthouse which also doubles as a place for meditation for my client. The neutral gray tones of the floors softens the blue green, gray and soft gold colored shower walls and has made the space very zen.