Talk:Game Updates/@comment-144.136.93.158-20120530074733/@comment-4775325-20120530082939

There is going to be a Pearl dragon, it's in the hint messages. Crystal + Water might be a possible combo but my guess is that like the Emerald dragon it will require a hybrid as the second dragon (maybe Ice or Seaweed) because that makes it more challenging to breed.

As for why Crystal, it's not guaranteed but it does seem pretty likely, it's because they are the Gemstone dragons and Crystal is a type of gemstone. Also the Birthstone Dragons blog which many people think may have inspired Backflip to make the Gemstone dragons had Crystal as a requirement for breeding all of them.