Diamonds

Diamonds are an in-game currency that can be purchased with real-world cash. You can use them to buy Specials, Spirit Orbs, Emotes, Battle Maps, General Skins, Profile Icons or Card Backs.


 * Every last weekend of the month there is usually a sale like this. So it is recommended to wait for them to buy diamonds.


 * Here is a Dollars and Diamonds dissection which tells you how much diamonds you get for your money.