Various community archives (like the now-defunct Vray-materials.de) have been mirrored by enthusiasts.
If you absolutely cannot pay for V-Ray, consider switching render engines that have truly free built-in libraries: Sketchup Vray Material Library Free Download
If you downloaded a JPEG texture from a site like TextureHaven (which is free for commercial use), you can turn it into a V-Ray material yourself. This is often better than downloading a poorly made free
Quick DIY V-Ray Material Recipe:
This is often better than downloading a poorly made free .vismat. Once you have downloaded your *
Once you have downloaded your *.vismat files, you need to import them. Here is the step-by-step process for both V-Ray 5/6 and older versions.
