These can be desynthed to get back 1 piece of Ebony lumber on the NQ desynth or 1 piece of Ancient lumber on the HQ desynth. Saved me some gil when skilling up on these. They don't sell on the AH that often and they NPC for 5k. You can NPC 8 of them and get back the amount for 1 petrified log, or you can desynth them and usually get more return than 1/8.
Edited, Fri Apr 28 01:37:38 2006