use the provided image as the absolute reference do not modify building geometry proportions height fa ade layout camera position or urban context the goal is material realism only not redesign replace the existing stone material with a highly realistic dark natural granite suitable for a brutalist skyscraper the granite must feel heavy structural and believable at large scale texture should be geologically coherent with natural grain mineral variation micro cracks subtle erosion and irregularities that read correctly at urban and architectural distances avoid stylized or exaggerated rock patterns the stone surface must be continuous and non panelized with no visible tiling repeating patterns artificial seams or graphic noise the finish should be matte to very slightly satin never glossy color range dark grey to charcoal with subtle tonal depth avoiding flat or uniform coloration ensure the granite integrates naturally with existing lighting and shadows the stone should respond realistically to daylight with soft variation across planes and edges reinforcing mass and thickness without drawing attention away from the building form do not change glass color reflectivity fa ade rhythm vegetation people background city sky or lighting conditions everything else in the image must remain exactly as it is final goal the image must read as a photorealistic brutalist skyscraper where the stone appears convincingly real at full scale heavy and architectural correcting the artificial look of the original stone while preserving the strong massing and urban presence of the image
