Not complete, but it's close:
http://forum.square-enix.com/ffxiv/t...ciples-of-Land
True, but how much did you spend on that materia, and how long will it take you for that slight HQ increase to pay you back? That's why it doesn't seem like a worthwhile investment to me. I don't know about you, but at 320 perception, I regularly walk away from an unspoiled node with 3+ successful HQ gathering attempts (so 9 HQ items, if we're talking Cocoons). I don't think additional perception would be worth the price. It also doesn't help me when I'm out getting clusters (which is VERY disappointing... why don't you just get more shards/crystals/clusters when you "HQ" them...).
Don't get me wrong though, that's a VERY impressive Perception number, but you should really stack more Gathering.