: Previously known as CC0Textures, this site offers over 2,800 public domain assets. Their materials often come with all the necessary maps (Diffuse, Normal, Roughness) needed for V-Ray.
Several reputable platforms offer extensive libraries of .vrmat and .vismat files tailored specifically for SketchUp: Sketchup Vray Material Library Free Download
: A 100% free, public asset library. While these are standard PBR textures, they are easily imported into V-Ray for realistic results in up to 8K resolution. : Previously known as CC0Textures, this site offers
: Built directly into V-Ray 6 and V-Ray 5, this is the official "native" library. It provides over 500 high-quality, pre-configured materials that are already optimized for the V-Ray engine. While these are standard PBR textures, they are
Once you have downloaded your material pack, you must integrate it into the SketchUp interface for easy access: V-Ray Material Library - V-Ray for SketchUp - Chaos Docs
: A community-driven site specifically for V-Ray users to share and download realistic shaders. How to Install and Use Your Material Library