All of them are in Spirit Stone Chests which also have different lvls.
The lvl of the chests decide which lvl the stones will have.
Example: LvL 3 Spirit Stone Chest -> Random LvL 3 Spirit Stone
masterhack900 replied at 2014-8-6 18:47
kido type protagonist i have. needs which type spirit stones ?
Wisdom ,agi , hit ,crit ,stamina ,breakdefence .
Add 2 or 3 high level counter to prevent ur Char from getting critted on , As a crit from a decent Force Char will probably one shot you .