Yes, Brazils Cocada Green Quartzite can be used for exterior applications in hot climates. Quartzite is a natural stone that is highly resistant to heat, making it an excellent choice for outdoor projects in areas with high temperatures. It withstands the suns rays without fading or losing its color and can handle the heat without cracking or warping. However, it is always recommended to consult with a professional before making any final decisions on materials for your specific project.