Ixal beast quests rank 5 and 6 give out the oaknots. These can be traded in for the i70 mats which are:

Cooking Sherry X20 =1 Oaknot
Filtered Water X 20 = 1 Oaknot
Voidsent Blood X20 = 1 Oaknot
Coke (insert joke here) X2 = 1 Oaknot
Animal Fat X2 = 1 Oaknot
Hardened Sap X2 = 1 Oaknot
Potash X2 = 1 Oaknot
Lime Sulpher X2 = 1 Oaknot
Aqueous Whetstone X2 = 1 Oaknot
Peacock Ore X2 = 1 Oaknot
Minium X2 = 1 Oaknot

So what does this mean? It means save your GC seals and do Ixal Beast quests for these items. Rank 5 so far gives one Oaknot per turn-in with the jury still out on Rank 6 for at least another 4-5 days till people reach that rank. So 2 days of rank 5 turn-ins
will grant enough for an I 70 crafting item. This can be used for selling, Master books of crafting (if the HQ is made), or making i70 items for desynth leveling.