Imagine the colors of the Grand Canyon in your own landscape! That is what you get with our Arizona natural stones derived from the beautiful Southwest! We have two different colors, black and brown. The black Canyon Onyx is layered with various shades of grays, amber, white and black. The brown Canyon Onyx is Brown, Reds, and white. We offer Arizona boulders in a variety of sizes from very small wall (stacking) stones to very large rocks up to 3000 pounds.