UNITED STATES,..Cambridge,..Massachussets,..400 sq feet of bluestone irregular drop. Will need delivery. Will have landscaping cloth already in place. Interested also in crushed rock (any will do) as a foundation- approx 6 inches deep. Also need advice on how to fuse the flagstone (? grout, peastone, cement). I am overestamating rock needs as I do not have a stone cutter. The total surface area is approx 250 square feet and thus I am allowing for stones that will not fit together. If necessary, I can hire a mason to securely fit stone but would like to do this myself. The total quantity of crushed rock would be 6" x 250 square feet.