3D Render Weathered Stones

I need 3D renderings of weathered stones for architectural restoration. The stones should be smooth and finished, and the renderings need to be of moderate detail for general use. Ideal skills and experience:... (Budget: £1500 - £3000 GBP, Jobs: 3D Architecture, 3D Design, 3D Graphic Design, 3D Illustration, 3D Modelling, 3D Rendering, 3D Visualization, Architectural Rendering)