I know they just came out with this.But if you are crafting for level 65 or higher,you have a hard time trying to get regents.I went to Bazzar and when i saw one like cobalt,mithril,or the 95 regent they are gone in a second or 2.How can i craft jewels when they are all gone in 1 second?
I suggest you check wiki for who drops the ones you want and pick a mob out you can farm fast. Here's the link to wiki for dropped reagents. Especially since they are new and the jewels disposable there will be people stalking the bazaar for a long time.