So there is no chance of me getting a purple crystal unless I do PvP which I despise and get a crystal that I can use in PvE, as in non-expertise?
Of course you can get a purple crystal.
1. Buy it from GTN some on your server bound to have the schematic
2. Defeat SOA or KARAGGA on hardmode. I think the purple is in all Columi Mainhand weapons.