update for 7-31-13:
-cherry blossom 160 gems
-red zen 190 gems (pop +130, 140 coins/8 hrs)
-white zen 19,800 coins (pop +130, 120 coins/4 hrs) - need 8 energy to construct
-brown zen 19,800 coins (pop +130, 110 coins/2 hrs) - need 8 energy to construct
-youth center 20,600 coins (cap +460, 170 coins/8 hrs) buildable requires: 4 municipal seals, 4 lights, 4 fixtures, 4 piping, 4 carpet. need 13 energy to construct