So you're botting or you've somehow come into tons of GIO and you're tired of the shuffle and ore just isn't selling that quick on your server or you just want to diversify and get into another market to exploit. Here is what you do.
Reqs
600 Alchemy (transmute spec for max profit)
http://theunderminejournal.com
tons of Ghost IRon
Pretty much you're just going to be converting your ore to trillium via Transmute: Trillium Bar - Spell - World of Warcraft
Conversion rate goes
2 Ore -> GI Bar
10 GI Bars -> 1 Trillium
I like to list them as stacks of 10, so effectively I can list and sell 200 ore in one auction without losing too much profit
A snap shot of my AH currently via theunderminejournal
Ghost Iron Ore is 2.75 per ore so 55g a stack of 20
Ghost Iron Bar is 7.31 per bar
Trillium Bar is at 54.99 so 549.90 for a stack of 10
So as you can see, the amount of Trillium to Ghost Iron is about equal.
Why this works better now than before 5.2
Secrets of the First Empire - Quest - World of Warcraft
This is the first quest you get in the 5.2 line
Anyone who wants to do the PvE line will have to buy out 40 trillium bars