Gems

Description
Gems are a diamond like currency in the game. They have a brilliant blue design, and, when items, become piles. Piles can be merged to make larger piles, thus larger diamond rewards.

Uses
Gems are the rarest of the freemium currencies used to buy high tier items from the default and event stores, to recharge your resources without watching an ad, the crate/cage and their upgrades, and buying skins. Gained from Thieves and Valuables Chests.