Yes, Dominican Republics Calypso Coral Stone can be used for exterior applications in very humid climates. Coral stone is a natural material that is known for its durability and ability to withstand various weather conditions, including high humidity. It is often used in coastal areas and tropical regions due to its resistance to saltwater, moisture, and heat. However, it is always recommended to consult with a local stone supplier or contractor to ensure that the specific type of Calypso Coral Stone being used is suitable for your particular climate and intended application. Additionally, proper installation and routine maintenance are important to ensure the longevity and performance of any natural stone in exterior environments.