With only a handful of days left until the shattering will likely take place, you have a number of players rushing to finish off their Scepter of the Shifting Sands chains so that they will get the FoS. One quest in particular, The Good News and The Bad News, is the focus of this thread.
Players need 10 Azerothian Diamonds, 10 Blue Sapphires, 20 Arcanite Bars, and 10 Elementium Ingots. With only this weekend left to finish of this chain, players will be willing to pay higher prices for these items (Ingots in particular, will get to that in a moment).
I'd recommend going and checking your realm's AH for the above listed items, and if you can safely buy out all of one of these items, do so, and repost for a high profit.
As for the Elementium Ingots, we have a very unique situation here. BWL is broken, and nobody has been able to make it past razorgore this week. What this means to you, is if you have any elementium ingots lying around, or can buy some for cheap, you can sell these for A LOT. I know a player on my server who is paying upwards of 5,000g per ingot in order to finish this chain before the shattering hits. I had one sitting on my bank alt that I had leftover from my chain, and it is now worth over five times it's typical market value.
Now in the scenario that BWL gets fixed before tuesday, there is also money to be made. Lead a BWL group on every character you can, and reserve the elementium ingots. I imagine on Monday before the shattering hits, if anyone is still attempting to finish this off, you will have no difficulty selling these.
Note: Elementium Ingots drop off of Blackwing Technicians inside of BWL. You have to kill razorgore, vael, clear the supression room, kill Broodlord, and then you can farm the Ingots.
Good luck, and Have Fun!