high lvl gem farming

[dethbringre]

Ok, so I've just reached 49 on my pally and I need to do my Divine Might quest. I'm currently broke, well I can buy everything required for the quest other than the diamond. I have a 52 bard I can hunt with for gems via chants. My question is this: Where or what mobs drop these high end gems? The only one that I'm aware of that i can solo is Alizewsaur in OOT. I know its a long shot to get a diamond off him but its better than nothing and I may get some gems I can sell to pay for a diamond in the process.

So is there any other 50+ mobs like this I can hunt for gem drops?