rock specimen 3d model

boulder natural stone texture nature environment nature environment realistic nature environment rendering nature environment rendering realistic realistic rendering rendering realistic rock specimen

Prompt

A large natural boulder with an irregular, heavy, asymmetrical shape, resembling a weathered mountain rock. The surface texture is dense and mineral-rich, featuring cloudy stone patterns with organic marbling in earthy browns, warm ochres, beige, and deep muted purples. The rock surface shows natural erosion, soft rounded edges mixed with sharp fractures, subtle cracks, and embedded mineral specks. The material is opaque stone, rough and matte, with slight surface variation and granular depth. No crystal growth, no polished areas, no symmetry. The overall form feels ancient, geological, and formed naturally over thousands of years, with realistic scale and physically plausible structure.

v3.0-20250812

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