Obsidian, Daniel Thiger : Material study of Obsidian, a type of volcanic glass. Gravel in the foreground is from my mountain texture pack:
https://artstation.com/artwork/PQJEL
100% Substance Designer, rendered in Marmoset Toolbag.
https://artstation.com/artwork/PQJEL
100% Substance Designer, rendered in Marmoset Toolbag.