Yes, Brazils Colibri Rubi Quartzite can be used for exterior applications in very dusty climates. Quartzite is a naturally durable and hard material, which makes it suitable for outdoor use. It is resistant to staining, scratching, and weathering, which makes it well-suited for withstanding the challenges of dusty climates. However, it is always recommended to consult with a professional to ensure proper installation and maintenance procedures for best results.