close up of dark, rough, textured slate stone. natural background with cracks and crevices

close dark rough texture slate stone natural background crack crevice artistic material closeup crinkle structure granular fossil abstract design igneous statue pattern mineralogy plaque sedimentary whorl surface artwork decorative sculpture stonemason monument lithology granite weather stonework stonecutte speckle geology facade stonecarve outdoor masonry mineral layer architecture detail carve erosion marble textured cracks crevices generative