luluzz - Thank you for your interest here! We were not the contractors on the job and did not specify particular tile (sometimes we do) and so we have no information about this tile floor. The contractor who did this work is no longer in this area. It looks like a pebble stone with white grout. Hope this helps.

Thanks. I was first attracted by this picture for the bench, that makes the connection between the bath and the shower. I suppose that you are the designer of this and... Félicitations! as we say in French.