What payments methods can I use to purchase Diamonds? Ironangel Updated October 16, 2017 18:34 Follow All purchases are handled by either Google Play or the Apple App Store, depending on your device. Your method of payment for either store is what used for in-game purchases in Portal Quest. Apple Payment Methods Google Payment Methods Related articles What are the current known issues? What do the different VIP levels do? What are Mercenaries? What can I do about fraudulent charges to my account? Comments 0 comments Article is closed for comments.