By betaza at 2012-04-15 08:49:35
There are nodes that can be found on the cliffs lining the rivers of Alderan. From the node you will receive a Rouch Magenta Crystal Shard that must be taken to Korriban to refine into Pristine Adegan Crystals. The alderan nodes are on no less than a 2 hour spanwn timer and I have only seen oneone spawn in this two hour time period. Archaeology is not needed to farm these and there will be no indication of it's location on your minimap.
This is the best guide to finding the rough crystals on Alderaan -- screenshots, accurate coords, etc. -- http://gaming.stackexchange.com/q/62861/6066
Once you have the rough crystals, you go to the tuning device on Tython or Korriban (coords in the guide) in order to get these Pristine crystals.