==Update==
Working on adding a new custom quest system to the server, Ebon-Furia-Ebur gear!
Once I get this fully working, through the npc Harith in Ru'lude gardens, you can upgrade any base piece of Ebon gear all the way up to the top tier Ebur gear to your job.
Once fully upgrade to Ebur custom Tier (6 steps), you can then add custom augments to the piece of armor.
In total, there are 5 slots of gear, 3 base sets, 9 custom sets. All standard ebon-ebur-furia gear from vanilla game.
All trades require 1 sparkling stone.
Upgrading Ebon->furia requires 1 wootz ore.
Furia -> Ebur requires one griffon hide.
And finally Ebur(base set) -> Ebon(custom set) requires 1 relic iron.
Each upgrade also requires 1 item based on the set.
MNK/THF/RNG/SAM/NIN/COR/PUP/DNC/RUN (base) (Slime Juice)
Upgrades to:
RNG/COR set (Frozen Head)
MNK/SAM/PUP (Lancewood Log)
THF/NIN/DNC/RUN (Colossal Skull)
WAR/PLD/DRK/BST/DRG (base) (Slime Juice)
Upgrades to:
War/Drk set (Frozen Head)
Pld set (Lancewood Log)
Bst/Drg set (Colossal Skull)
WHM/BLM/RDM/BRD/SMN/BLU/SCH/GEO Set (base) (Slime Juice)
Upgrades to:
RDM/BRD/BLU set (Frozen Head)
BLM/SCH/GEO set (Lancewood Log)
WHM/SMN set (Colossal Skull)
So, in closing, each upgrade requires 4 items to be traded.
The piece of armor
1 sparkling stone as a fee
1 of Slime Juice/ Frozen Head/Lancewood Log/Colossal Skull
1 of Wootz ore/Griffon Hide/Relic Iron
Total 4 items.
Note: The third trade, relic iron, will use Frozen Head/Lancewood Log/Colossal Skull to determine what the custom set is. Once this trade is done you cannot undo the trade.
For example, WHM/SMN path.
Start with base Ebon piece.
Trade Ebon Piece + Sparkling Stone + Wootz Ore + Slime Juice -> Get Furia piece.
Trade Furia piece + Sparkling Stone + Griffon Hide + Slime Juice -> get Ebur Piece
Trade Ebur Piece + Sparkling Stone + Relic Iron + Colossal Skull -> get Ebon WHM/SMN piece
Trade WHM/SMN Ebon piece + Sparkling Stone + Wootz Ore + Colossal Skull -> Get furia WHM/SMN
Trade WHM/SMN Furia + Sparkling Stone + Griffon Hide + Colossal Skull -> Final Ebur WHM/SMN piece.
I have several more things to do now to fully impliment the system.
Add the mats to craft Ebon sets to KSNM 30 fights (so crafters can actually make the ebon gear)
Add the ability to custom augment the ebur gear with another NPC.
Check it out, it doesnt do much yet but the trading upgrades are 100% working right now, enjoy