

Diamonds can be earned through recurring quests, but only once for each quest.

Recurring quests require the player to collect some resources, gain units, or do other tasks to gain rewards. If the player completes or aborts all available side quests, recurring quests will take place until the requirements for new side quests are fulfilled. New side quests are triggered by completing story quests, researching technologies, constructing specific buildings, scouting and conquering provinces. Those quests contain a lot of tasks that require advancing on the campaign map. Story quests provide an overarching plot for an entire era. Story, Side, Recurring quests side panels
