Neverwinter

There are many ways you can earn Astral Diamonds (AD's) or Rough Astral Diamonds (RAD's) in the world of Neverwinter. If you want them now, there are some packages that can be bought with Zen that have high amounts of AD's. Otherwise, if you're earning them like the rest of us; here's how you can do it. This is a cumulative achievement; you don't need 50,000 at once.

1) At level 10 you can access Professions for the first time. Some of the tasks take many hours, but don't worry, the timer counts down even if you're offline. Professions will earn you AD's if you can make good equipment and sell it in the Auction House. Higher end crafted equipment can be highly sought after.

2) You can earn RAD's at level 11 when you first learn your Invocation mechanic (see "Daily Affirmation" achievement above). You can use the Invocation six times per day; five of the six times you will earn a small amount of RAD's. You can then refine the RAD's into AD's in the 'Riches' tab of your inventory.

3) Rhix, a shifty kobold in the Protectors Enclave will offer information on how to earn RAD's via clearing a dungeon or skirmish. Just enter the queue, finish the event and profit! You can earn 7,200 RADs per event if you complete random dungeons and skirmishes.

4) You can sell unwanted, or crafted items in the Auction House for AD's. This allows you to post items to the entire community of possible buyers. People can bid on your items, or you can set a buyout price when you post it. 

5) If you purchased Zen then visit the Astral Diamond Exchange. Here you can exchange ‘Zen’ for AD’s (and vice versa).

6) You can salvage level 60 epic items (purple) that you don't need for RAD's and then refine them. By this point you should have earned 50,000 AD's though.