Talk:Jade Dragon/@comment-70.209.5.144-20130629224353/@comment-177.59.188.57-20130630192914

If you fully upgrade the island, you won't get more than 25 gems every week.

There are 20 spots, so you can get 20 gems every week - IF you only display the monthly gemstones, and no Jade.

Also, 25 gems is the first upgrade. The second is 50. And a full upgraded island is 300 gems.

Your payback time is 15 weeks minimum (if you have 20 non-Jade gemstones).

Anyway, it's not about the payback. If you need to upgrade your island, that means that you have at least 13 dragons. And if you have 13 dragons, you sure was keeping at least one of them in hibernation cave, expecting for this update.

And if you was expecting for this update and wasn't expecting to spend gems for the upgrade (even when the Elemental habitats need 25 gems to upgrade), then you was very naive.