Yes, Brazils Ilha Bela Quartzite can be used outdoors. Quartzite is a naturally durable and weather-resistant material, which makes it suitable for outdoor applications such as patios, walkways, pool surrounds, and exterior cladding. It can withstand exposure to sunlight, rain, and temperature changes without deteriorating. However, it is always recommended to consult with a professional stone supplier or installer to ensure the proper selection, installation, and maintenance of the quartzite for outdoor use.