👉 Sinkstone is a type of granite stone that originates from South Africa. It is known for its distinctive, hard, and durable appearance. The name "sinkstone" comes from the fact that it is commonly used in construction work as a base stone for foundations or walls. Despite being a popular choice for countertops and flooring, sinkstones are not typically found naturally on Earth, but rather are formed through geological processes such as erosion, weathering, and metamorphism.