Board Thread:Dragon City Gameplay Questions & Answers/@comment-24054781-20131015172223/@comment-13933821-20131015181413

Based on the information in this wiki, legend Crystals suppose to build instanly.

Maybe the new update, all crystals have 6 hr wait,

I build my legend crystal instanly (don't have to wait at all) but it's about 2 month ago.