When you get gems you receive only a limited, non-refundable, non-transferable, revocable license to use Gems, which has no value in real currency. By selecting the Premium subscription package, (1) you agree that you are over 18 and that you authorize us to charge your account every month until you cancel the subscription, and (2) you represent that you understand and agree to the Terms of Use, which includes an agreement to arbitrate any dispute between you and diamond, and Privacy Policy. You can cancel at any time by clicking “Cancel subscription” on the billing tab of the setting page. If you cancel, you will still be charged for the current billing period. See Terms of Use for other limitations.