Black Jasper is a semi-precious stone that is primarily used for interior applications such as countertops, decorative accents, and jewelry. It is not typically recommended for exterior applications, especially in very rainy climates.

While Black Jasper is known for its durability and strength, it may not withstand the harsh conditions of constant exposure to rain and extreme weather. The constant exposure to water and moisture can cause the stone to deteriorate or develop stains over time.

If you are considering using Black Jasper for an exterior application in a very rainy climate, it is advisable to consult with a professional stone supplier or installer who can provide guidance on the stones suitability and recommend appropriate sealants or protection measures to enhance its durability and longevity.