To receive bonus gems, you should link your game to your Facebook account:
1. Make sure you have a stable Internet connection enabled.
2. Select Facebook icon in the pop-up window which appears upon completing an achievement and press OK.
3. You will be redirected to the social network page where you will need to set up a permission for the application to access your social network account.
Please, note that you can receive gems only once for connecting to the social networks.
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