Other models of materials: http://3dsky.org/collection/shared/5344322 

The archive contains a 3ds max 2015 scene for Corona and V-Ray + fbx files.

Renders for the preview were made in Corona Render 9. On the Corona Legacy Mtl model. Corona Render version 1.5 or higher is required. Materials were converted to V-Ray using V-Ray scene converter.

The scene contains 3 panels with overlaid stone/rock materials. Texture resolution: 8192 by 8192 pixels (8K). All textures are seamless.

Each material has a displacement map. Adjust the displacement parameter as needed.

Poly: 450
Verts: 456

All my models are optimized, made for anti-aliasing (where it is needed). They do not have unnecessary geometry and unjustifiably heavy maps. All archives are as light as possible without losing quality. All objects and materials are logically named.

"For Corona Render: it is recommended to install version not lower than 1.5, since the glossiness of materials is configured taking into account PBR.

Those who work in V-Ray version lower than 3.1, be careful. In the materials in the BRDF section there is Microfaset GTR (GGX), if your version is older than 3.1, then the BRDF field will be empty. Select Blinn, Phong or Ward - what is preferable for you."