"Create a smooth rectangular wall block, 3 meters wide, 2.5 meters high, and 0.2 meters thick. The block should have sharp, clean edges and perfectly flat surfaces. No textures, no openings. Use watertight geometry suitable for modular construction."

"Create a smooth rectangular wall block, 3 meters wide, 2.5 meters high, and 0.2 meters thick. The block should have sharp, clean edges and perfectly flat surfaces. No textures, no openings. Use watertight geometry suitable for modular construction."

"A seamless wall texture made of rough, irregular natural stones in shades of gray and brown. The stones are non-uniform in size and shape, held together by visible mortar. Some moss or weathering on the surface. Highly detailed for PBR use with realistic depth and shadowing.