I have worked together with Daniel Thiger to make his awesome rock materials available to you as alphas and brushes for ZBrush, Substance Painter etc. Preview & Download - https://www.artstation.com/artwork/KazOQ9 - 40 Alphas & Brushes. - 2048x2048 16-bit. - PSD,Tiff,PNG,Jpeg. - ZBrush Brushes.
I have released a set of 16 Skulls/Bone meshes and IMM brushes for ZBrush, great way to add content and details to your scenes/characters or concepts. OBJ and FBX files are also included for anyone that wish to use them in any other software. Download & Preview over at - https://www.artstation.com/artwork/xzB9oX