All Maps are 4k
The texture is seamless

Maps (Vray, Corona): AmbientOcclusion, BaseColor, Glossiness, Normal, Displacement

The way the material is displayed depends entirely on the lighting and the surrounding environment.
The moisture level of the material can be changed by changing the gamma number in the color correction related to glossiness

V-Ray Material Library
Corona Material Library
Max file V-Ray
Max file Corona