Diamonds can be found at Y=1 to 14 and can be found in groups of eleven or less. They can be mined with an iron pickaxe or a diamond one. If they are mined with any other pickaxe then you will not be able to get the diamond.

This gem is also able to be found in generated structures such as desert temples or even villages. This is not that rare and most of the time, you should be able to find them. It has also been proven that diamonds are more common in desert biomes.

Diamonds are useful as they are used to get enchanting tables and other really cool things! You also need diamond items to get netherite so you could say that diamond is the first step! Diamonds are usually found on Y 12 to 8, so if you really want diamonds, I would recommend searching there.

 

Diamonds are found deep because of how valuable they are. They were put deep to make sure that it is actually worth going down and maybe losing your stuff a few times to find the shiny blue gems. One of the most important items that diamonds can help you get is a diamond pickaxe so you can get obsidian to make a portal to the nether. Some people found a way to use buckets to make a portal, but mining obsidian with a diamond pickaxe just makes it less complicated.