A procedural sandstone material designed specifically for the Cycles render engine. The shader utilizes the geometry pointiness parameter to automatically generate and place dirt within the crevices and recessed areas of a model based on its shape. Users can independently adjust both the primary stone color and the accumulated dirt color to fit different environments or lighting scenarios. The material is fully procedural and seamless, though it requires standard UV unwrapping to function correctly. Due to its reliance on the pointiness node, it is not compatible with EEVEE.