Deleya
Deleya: free seamless stone PBR material with albedo, normal, roughness, metalness, height, AO maps. CC0 licensed.

Crafted from the prompt: "Realistic weathered desert sandstone rock, hard fractured surface, warm dusty tan and muted brown tones, dark crevices, small natural mineral variations, heavily weathered by wind and heat, realistic military-shooter environment, physically based material, seamless tileable texture, no vegetation, no soil, no objects, no lighting baked into the albedo, high-frequency rock detail, suitable for Unity 6.5 URP."
PBR maps included: albedo, normal, roughness, metalness, height, AO. Resolution 1K. Tileable: yes. Download: PNG maps in a ZIP archive. License CC0 (public domain).
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