There’s a new feature released today with work hard theme : simcity social diamond club !
you might see a new purple and yellow bar underneath your diamonds balance 
what the Diamond Club does in simcity social ?
When you spend certain amount of Diamonds a special reward will be given as bonus. It’s not a mandatory as it’s not given in the quest.
You need to purchase premium diamond and then spend it ! so far if you spend 35 Diamonds you get rewards! It’s great!
I got 6 Diamonds back + Soccer Pitch and 7500 Simoleons.
The next Phase is spending 48 Diamonds. It works like a loyalty card so the more you spend you get rewarded.
