Gems are an important in-game currency that can be used to speed up waiting times, purchase missing resources, Equipment Safes and Coins.

 You'll get more Gems in a variety of ways:

• Pick up the golden chest that will appear after some missions

You can choose to get 1 Gem immediately, or watch a Rewarded Video to gain 6 Gems instead!

• You can also get Gems from various events and rewards from battle passes

• You may also purchase Gems from the Shop, or by tapping the Plus Symbol located in the top right corner of the game screen.
  Here you can spend real money to buy Gems. You can also purchase Offers that can contain various amounts of Gems that will assist you.