You can find it in caves and you must dig it with pickaxe (not wooden or stone pickaxe)
Stone and coal=Wood/Gold or better Iron=Stone or better Redstone, Lapis Lazuli, Gold, Diamond, Emerald=Iron or better Obsidian=Diamond only
In Minecraft, you will need to use an iron pickax to mine the rubies in the game.
you can use a iron pickaxe to mine it as this can mine every ore in minecraft
For Vanilla Minecraft, you will need a stone pickaxe (or better) to mine iron ore.
iron pickaxe
You need at least an Iron Pickaxe.
Use a pickaxe
Maybe you're not using a pick to mine. You need to use a pick.
You can use an iron, gold, or pre-existing diamond pickaxe to mine diamond ore or diamond blocks
In Minecraft, various minerals/ores need a certain quality of pickaxe to mine them: To mine a stone block and get a drop, you need to use a wooden pickaxe or better. To mine a cobblestone block and get a drop, you need to use a wooden pickaxe or better. To mine a coal ore block and get a drop, you need to use a wooden pickaxe or better. To mine an iron ore block and get a drop, you need to use a stone pickaxe or better. To mine a lapis lazuli block and get a drop, you need to use a stone pickaxe or better. To mine a gold ore block and get a drop, you need to use an iron pickaxe or better. To mine a diamond ore block and get a drop, you need to use an iron pickaxe or better. To mine an obsidian block and get a drop, you need to use a diamond pickaxe or better. (this list is not complete) Quality order of Pickaxes (and other tools) *1 is the worst, 4 is the best* 1. Wood 2. Stone 3. Iron 4. Diamond You can also make tools out of gold, but they have a very low durability (even worse than wood) Gold pickaxes can successfully mine coal ore, iron ore, gold ore, lapis lazuli ore, diamond ore, stone, and cobblestone. There may be more. They also are very quick, but most likely not worth it.
minecraft let you use cool weapons
You will have to use an iron pickaxe to mine diamonds.