Available on Artstation and Gumroad-
https://gumroad.com/l/ZZKOu
I found myself making this type of procedural keyshot material for showing off my zbrush sculpts so I decided to put them together in a gumroad pack. These materials primarily use curvature and occlusion to exaggerate and show off the form of your sculpts in interesting ways without having to worry about UVs. There are 41 materials in total. ranging from simple colors, to fancy metals and more.
All materials were authored in Keyshot 7.3 and will work in Keyshot 7 and newer.