Yes, Granite Honeycomb Panel can be used outdoors as it is a popular choice for exterior architectural cladding due to its durability and weather resistance. The honeycomb structure of the panel provides excellent strength and stiffness, while the granite surface provides a natural stone aesthetic. Additionally, the panels are lightweight, making them easier to install than solid granite panels. Overall, granite honeycomb panels are a great choice for outdoor use, particularly in high-traffic areas where durability is essential.