Diamonds in Ni no Kuni: Cross Worlds is a currency that is more valuable than Gold, it is also a lot more difficult to earn. Take a look at our How to get Free Diamonds guide to find out how you can get your hands on this premium currency which is used for purchasing rare items, summoning new Familiars, and generally upgrading your abilities.
Occasionally when you send a team of your Familiars on an exploration mission they will come across large blue stones, that jut out of the ground. These big stones can be mined for a decent payout of diamonds providing you first deal with the team of enemy familiars guarding them. To start the attack you will first have to pay a certain amount of tickets.
When you cross certain level thresholds in Ni no Kuni you will be given a reward which will consist of helpful items, materials, and Diamonds. Your rank increases with the achievement of every 10th class level. This means in order to reach the levels that pay out the rewards will require a lot of grinding.
Rank 4 (Level 60):
Reward: 1,000 Diamonds
Rank 5 (Level 100):
Reward: 2,000 Diamonds
The Labyrinth of Dreams is a level-based gauntlet of battles and challenges that will reward you Diamonds when you complete them in the shortest possible time or earn at least 20 stars. Rewards can only be received once. Before you start a level in the Labyrinth you can check to see what rewards you will earn from it, which tends to be around 50 Diamonds or so per level.
Don't forget you always have the option to buy Diamonds in Ni no Kuni: Cross Worlds at the shop using real money. Purchasing Diamonds is the easiest and most consistent way to get Diamonds, but if you are committed to being a free player you will need to explore the options above.
Take a look at our Beginner Tips and Tricks to get help in Ni No Kuni: Cross Worlds.
We have questions and answers related to this topic which may also help you: