Yes, Indonesias Indo Pink Coral Stone can be used for exterior applications in very rainy climates. This type of stone is known for its durability and resistance to various weather conditions, including rain and moisture. It is naturally formed and has a high density, making it less prone to water absorption and damage. Additionally, the Indo Pink Coral Stone is often treated with sealants or coatings to enhance its water resistance, further protecting it from the effects of heavy rain and moisture.