Thank you for checking out our pictures. The stone was done by someone else. I do know that it was a man made stacked stone with no grout showing. As for cleaning it, That is a question best left up to your insaller.

Do you know what the counter top is?

It is a granite counter top which was purchased from Gorge Granite Works in The Dalles, OR. We did not have a hand in that part of the project so that is as much information as I can give you. Thanks for your interest!