Another way of getting free two diamonds is when you come back a few hours after. You need to also improve your restaurants like tables and chairs to add to the patience of your customers.

Hello Monette, all you need to do is play the level 40 of the bakery or hotdogs and get the diamond once you reach the 9400 and another way of acquiring the diamonds is to play the casino, once a day, or every 24 hours if you have enough cash, and play the slot machine, you can get 15 diamonds as your jackpot