Yes, Brazils Sea Pearl Quartzite can be used in exterior applications in very sunny climates. Quartzite is a natural stone that is incredibly durable and resistant to heat and weathering, making it an ideal choice for outdoor use. However, it is important to ensure proper installation and maintenance to ensure the longevity and beauty of the stone. Additionally, it is recommended to seal the quartzite to protect it from any discoloration, etching, or staining.