Tri-State materials is one of the largest natural stone suppliers in southern California. We specialize in Flagstone, Boulders, Cobble, Gravel, D.G., and Pebbles. We also offer a wide array of block and pavers. Furthermore we carry masonry supplies such as cement, mortar, thin set, Thoroseal, rebar, and sealers. In addition to masonry products we carry D.G. stabilizing products as well. These...