Gravel

rubble
In the archive: Albedo Monotone
Albedo Motley
AO
Diffuse Monotone
Diffuse Motley
Reflect
gloss
Normal
Bump
Displace
Mask
V-Ray Material Library
Corona Material Library
Max V-Ray file
Max file Corona
OBJ file
Readme
Texture size: 4096 by 4096 pixels
Real size: 1500 by 1500 mm
Stone size: ≈15-25 mm
Textures are seamless. All textures, maps and materials have logical names in English. Texture paths removed.
By default, the material is set to the Normal map. If you want to use Displace, then you need to: 1) Enable Displace slot
2) In the Bump slot, go to the Normal map, and change the Normal value from 1.0 to 0.0. The Bump value does not need to be changed.
3) In the Diffuse slot, go to the Composite map and turn off the top layer (its name is Diffuse).
Thus, the bottom layer of Albedo (without shadows) will be displayed on the render.
Given the work of Displace, there will be no double shading and the result will be correct.
Other materials you can find in my profile: https://3dsky.org/users/maltsev_stepan/models 
If you have any difficulties, write in private messages, I will be happy to help you!
ATTENTION!
The author does not give his consent to the use of this material in his models uploaded to the stocks, including 3ddd / 3dsky.
There is no stone geometry in the archive: You purchase a set of textures and customized materials. The .max files have simple Planes with materials overlaid on them.
Those who work in V-Ray versions 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. Choose Blinn, Phong or Ward – whatever suits you best. For Corona Render, it is recommended to set the version to at least 1.5, as the Glossiness of the materials is configured with PBR in mind.
Creative success!