There Day is a Free to Play game created by Supercell company. This consists of a universe of farmers who are dedicated to the production of agricultural items and the expansion of their territories to become the most prosperous and largest in their neighborhoods.
But, although this game is Free to Play, it also has a feature that allows access to benefits for a small optional contribution. This contribution is used to acquire Diamonds, or the most universal currency in the game. The amount you want to buy will depend on your budget.
But unless you are a billionaire to have all the diamonds you want, this is practically impossible, so any software or person that offers you this possibility is cheating you. It is best to conduct your diamond search in the manner indicated by Supercell, which we briefly describe in this post.
However, at your own risk, you could try this method mentioned here. But try to do it with your secondary account to avoid an unnecessary ban.