Senad Korjenic writes:
Since I uploaded my stone collection on Planet Blender it has been one of the most popular downloads on the site. but because I made those stones years ago and the materials are not really the best and up to date with the actual version of blender. That's why I decided to create a completely new collection, not only does it contain more 3D models but I also added some interesting features. For example I created eight different materials each one with a 1K, 2K and 6K version, the 1K and 2K version work great in particle systems and the 6K version is prefect for close ups. I used a very simple trick to get a better and more realistic distribution of the rocks when used in particle systems, you can get more information about that here.
Of course there is a free version and it's worth taking a look at it, I hope you like it and I would love to get some feedback from you guys.