I been farming for any gem recipe at act 3 for several weeks but none drop. But when I do some googling, almost 99% source say those recipe drop at act2. Anyone can confirm or having the same situation?

All my radiant star plan drop at AH

...make it a point to pick up emerald gem of flawless square quality then sell in ah, hehehe.

got my marquise plan for ruby.. keep or sell..

I bet their camel/mule also wear marquise gem all over their gear

FS emerald price listed is quite "misleading" .. whole day the price stays arnd 9xxx each but each time i buy in bulk (enough to craft 2-3 RS), i usually get refund which after calculating the actual price of FS emerald is lower (as low as 6k each) .. the key here is to look at Last average 10 trades .. the lower it is the more refund u might get.
Anyways after crafting & selling 10 RS, i made a nett profit of 11m .. not much as b4 but still xtra gold to fund for gear upgrades 

omaigod la. was just googling for gem calculator.

Need 729 Flawless Square for 1 radiant star gem. mehhhhh

RS emerald price is increased to 26m.
i have couple of it luckily i didn't sell at 21m-22m.
i managed to sold at 26.5m each yesterday