You can get diamonds by:

  • Completing achievements
  • Purchasing them from the Gift Shop
  • Extracting them from rifts, using your warper.
  • Watching in-game ads in diamond rifts. Please bear in mind that you can only watch a limited number of these every day, and you can only watch them while you are using a diamond rift.
  • Opening loot boxes.
  • Completing sets in the Tailor of Fortune. 
  • Selling items in the recycler. 
  • Using the free diamond offers in the Gift Shop.