Obsidian reps - Experimentation with some Ideas for the pen name, every artist should have one I guess.
Obsidian: |əbˈsidēən; äb-|noun
a hard, dark, glasslike volcanic rock formed by the rapid solidification of lava without crystallization.
ORIGIN mid 17th cent.: from Latin obsidianus, error for obsianus, from Obsius, the name (in Pliny) of the discoverer of a similar stone.