Our years of experience as innovators and designers in the landscape industry has taught us that landscape rock is not "just rock, " it is a cost effective, eco-friendly material that when artistically combined can beautify and preserve any project. Kalamazoo Materials chooses to ONLY mine and sell quality tested granites, rhyolites and quartzite that can be found in multiple locations throughout Arizona and Southern Nevada. These products are guaranteed to be durable, preventing the weathering, melting and decomposition commonly associated with other rock products.