Do you wish that you have more gems to play the synth game?
Would you want to start collecting the gems 15 days earlier? Yes?!
Then pay attention, because Happy Fish is kind enough to tell you the answer.
Step 1: Tap on the GIFT BOX.

Step 2: Go to the GET YOUR DAILY CHECKIN STAMPS page.

Step 3: Tap on the MORE button.

Step 4: This is the STAMP EXCHANGE PAGE. This page is updated on the first day of every month, for example January 1, February 1, March 1 etc.

Step 5: When the STAMP EXCHANGE page is updated on the first day of the month, the gems shown will be those needed for the next synth game. Start collecting your gems before the next synth game begins!

Wait a minute! What if I am mistaken? Might it be a coincidence?
Let's try to verify the theory for the past two months.
This is the STAMP EXCHANGE page for 1 - 31 December 2013.

Compare with the synth recipe of the Green Peacock, which started on 16 December 2013.

This is the STAMP EXCHANGE page for 1 - 31 January 2014.

Compare with the synth recipe of the BlueBerry Macaron, which started on 16 January 2013.

It is very likely that Happy Fish would reveal two out of the three gems needed in the synth gem. The third gem is not always revealed, otherwise this game won't be that exciting eh?

Compare with the synth recipe of the BlueBerry Macaron, which started on 16 January 2013.

It is very likely that Happy Fish would reveal two out of the three gems needed in the synth gem. The third gem is not always revealed, otherwise this game won't be that exciting eh?