Hou can by my leates Shader library.
TSTUDIO CINEMA 4D + OCTANE SHADER LIBRARY VOL.2 CERAMIC
140 high quality advanced shaders for Octane render
for C4D (.C4D) and Octane Render standalone (.orbx).
The library consist of 140 comon ceramic and clay shaders
You can buy it on gumroad.com:
https://tomerk.gumroad.com/l/yzorn
You can download Free shader sample here:
https://tomerk.gumroad.com/l/ejqjz
You can get it as part of Behance subscription.
Renders of all shader you can find here:
https://www.behance.net/gallery/1540138 ... rary-vol-2
Here are few samples: