Made In The USA! Better Value Than Resin Or Plastic Planters And Much More Durable Beautiful Detail And Indigo Color Hand Stained 6000 Psi Rated Material All of our stone products are cast from the highest quality 100% cast stone while utilizing proprietary casting techniques. Our stone products feature a hardener added during the mixing process that helps it attain a 6000psi rating (the standard for a driveway is 3000psi)and depending on size all of our stone products feature either re bar or wire reinforcement so you know they will last a lifetime and truly are solid as a rock!