Brazils Leblon Quartzite can be used in exterior applications in very rainy climates. Quartzite is a very durable natural stone that is highly resistant to weathering and moisture. It has a very low water absorption rate, making it ideal for outdoor use. Additionally, Leblon Quartzite has excellent slip resistance and is resistant to staining, which is important in rainy climates where moss, algae, and other organic materials may be present. However, proper installation and sealing are still necessary to ensure the longevity and performance of the stone in such climates.