1. Join the Clan – Join the clan for the first time to get a good sum of diamonds as rewards
2. Clan Gift – You may get the diamond form Clan Gift as well Joining a Clan with massive members is a good choice
3. Relocate your Castle – Escaping from the war and moving to a safe place is a good choice
4. Purchase Gift Package – Purchase in the shop can quickly obtain a large number of diamonds
5. Arena Challenge – When your arena ranking exceeds the highest ranking in your history, you can get diamonds as rewards