In the archive you will find 3 spheres with materials.
The scene in the preview is different from the scene in the archive.

In the archive:

-5 seamless textures jpg format resolution 4096×4096
– max 2017 (Corona 7)
– max 2017 (VRay 5)
– OBJ

Units of measurement: mm

Pre-rendering using Corona.
Texture paths have been reset. Textures have been given individual names.

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.
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.