Yes, Dominican Republics Colonial Coral Stone can be used for exterior applications in very dusty climates. Coral stone is a durable and weather-resistant material that can withstand harsh climates including dusty environments. It is commonly used in construction and architecture for both interior and exterior applications such as walls, facades, walkways, and landscaping in various climates around the world. However, regular cleaning and maintenance may be required to remove dust and debris buildup to maintain its aesthetic appeal.