If you have a V-Ray 5 license or newer (including trial versions), you already possess access to one of the most valuable free material libraries available. is a cloud-based asset library included with all V-Ray subscriptions, offering over 6,000 assets including 3D models, ready-to-use PBR materials, and HDRI maps.
Using a V-Ray material library can save you time and effort in your design workflow. Here are some benefits: Sketchup Vray Material Library Free Download