Yes! You and a friend can get free Crystals when they enter a redemption code you send them.
Simply click on the “Free Crystals” icon on the lower left corner of the game screen to view your code. The code will be a 12-digit alphanumeric sequence and will be unique to your account. Click on the “Copy to Clipboard” button to copy your code to send to your friends via text, email, social media - however you prefer to communicate!