In Minecraft, diamonds are one of the most sought after items, due to their use in crafting diamond and netherite tools, armor, and weapons. Aside from that, they are also one of the rarest ores in the game along with ancient debris, lapis lazuli, and emeralds. It makes them really hard to find and severely limits the supplies of diamonds of the players. This guide is intended to help players who want to obtain, maintain, and expand their diamond supply. There is no such thing called an auto diamond farm so you can check these out if you want.
Diamonds are able to be obtained from diamond ore, a rare find found in about ~0.0846% (~1 in 1200) of blocks in levels 5 to 16. They are able to be found beneath layer 16, but are the most normal in layers 5 to 13. A lot of players find it through caving or mining.
You will need a diamond, an iron, or a netherite pickaxe to mine diamonds. Even though it may be tempting to use stone tools to attempt to save the durability of iron tools, diamond ore will not drop diamonds when mined with a wood, stone, or gold pickaxe. You can use an iron pickaxe or better at these low levels for anything that looks unusual. Sometimes, they are also able to be found in naturally generated chests.
Spelunking or exploring caves takes less time and tool usage compared to mining, but it is more dangerous since there could be monsters within. If you want to locate the diamond ore by caving, you can just simply explore any caves you find, either by locating surface entrances or digging and working your way down until you are below level 15. Apparently, pressing F3 will help you check your depth.
Blowing up TNT is one of the fastest methods to mine, but it does need them to kill a big number of creepers for gunpowder and get lots of sand. Once they have a good amount of TNT, they can either blow up one at a time, detonate a big clump, or place a block each five meters.
By branch mining
Branch mining is safer and more reliable compared to caving but it consumes more tool crafting resources. Aside from that, it also generates a lot of spare cobblestone, dirt, granite, gravel, andesite, and diorite, which depending on the player, may be viewed as a downside or a benefit.
By mining other ores
Sometimes, if you are on the right level of course, you are able to find diamonds by mining other ores to see if diamonds are hiding behind you, but it is rather rare.
Even though diamonds themselves are nonrenewable, the tools and armor are able to be obtained via villager trading. The items that can be renewably obtained via villager trading are diamond pickaxe, diamond sword, diamond axe, diamond shovel, diamond hoe, and diamond armor.