Diamonds

[xotrilogy]

Which enemies drop diamonds?? Need a lot of them for most end game weapons

[Arisato]

I don't remember the name but just farming in Adamah block will give you tons of diamond especially if you chose the devil tarot.

[Killance]

It's the last floors of the game that drop them.

[Commander Shepard]

Diamond drops start at floor 65, the odds increase as you climb up but they become more common on floor 215 and up. Other than that, you'll need luck on your side.