Tumbled patio flagstone is the result of taking fresh processed patio flagstone and placing it into a large giant steel barrel and putting it on a slow spin cycle. The result is stone that is soft edges and worn surface. Most flagstone is not offered in a tumbled style as it is very costly and many stone types cannot withstand the extreme pounding. Stone products must be very hard to endure the tumbling process. Three Rivers Stone was one of these very hard stones that was offered tumbled and looked very nice when it was done and cleaned off.