The stone is wet, so not polished, and is just one color.
Bigger size -
Just clean it get paid and we will call it sammy sandstone if you want!
If this doesn't work I am taking simon advice, and calling it Sammy sandstone !
I don't have a problem cleaning it, I just don't know the official name of it. I remember someone posting a similar " what have you cleaned today " picture, and someone gave the answer, but I can't remember cos I is thick !