Rocks group of 3D model

Model of 3 different size of rocks, mapped in one texture.

Comes with uncompressed png images high quality 4096 x 4096 diffuse, normal and displacement maps, inside the maya zip.
All textures are painted in Zbrush and improved in photoshop.
Maya (.ma) is the native file format, I've exported it also in obj.

The pictures are rendered with mental ray in maya using the displacement map, just some of them are without it where specified.
Also the ones with wireframe are without the displacement map. some of them are rendered with mentalray and others are screenshots of the viewport in maya.