How do you get free gems in DragonVale?

Actually there is a way its not like cheating, you basically earn them. Keep cooking thing the bar under it on the cook book will keep going up and when it feels up and you get 1 gem.Or you keep going on going on that game _______ days straight and for some days you could gems or a large coin value.....i tried selling my stuff that were worth gems but no hope.

This probably wasn't what you were expecting earning it a slow way but i get like 2 gems a day this way they'll add up :)