Toast, my current quest to nobility ratio is 93.3 quests to every 1 nobility earned. I'm expecting that number to change as I get more data on this.
Willis, toast posted an long thread on this subject, and yet you ask that question? Read the goddam thread.
I actually finished my last quest the other day and got 500,000 and 10 crystals ... This seems accurate judging by the last i completed.