Sage Green Stone and Boulders Arizona quarry - Schist Sage Green Stone is an interesting pale green schist rock material that his random tan to brown coloring running through the stone. This stone has ideal colors for projects needing a rustic look. The grain in the stone projects a very interesting wood look to it. The large boulders are outstanding for use as bench boulders for seating on in public spaces. This quarry is busy producing a wide range of schist rock materials ranging from flagstone, veneer, dry stack ledgestone, up to large boulders. Materials are shipped on pallets throughout Arizona, California, Nevada and the Southwest and on pallets anywhere requested.