Mobile Legends: Bang Bang Diamonds is the in-game currency that can be used to purchase various items and features within the game. Diamonds can be obtained through in-game purchases using real money, or by participating in various in-game events and completing certain tasks. They can also be obtained as a reward from events, tournaments, and giveaways organized by the game developers. Diamonds can be used to purchase a variety of in-game items such as heroes, skins, emotes, and other cosmetic items. They can also be used to purchase certain in-game features like hero trial cards and battle points (BP) conversion.