Diamond ore generation peaks at y ≈ -58 in Minecraft 1.18+. The pre-1.18 advice of y=11 is obsolete. Below y=0, the ore is almost always , not — search for both names. An iron pickaxe is required — diamond ore mined with a stone pickaxe or weaker drops nothing. Craft the iron pickaxe (3 iron ingot + 2 sticks at a placed crafting table) before mining diamond. A diamond pickaxe is not required. To descend quickly , call with your current x/z and a deep y (e.g. ) — the pathfinder digs straight down in one action. Don't stone repeatedly to descend; it wastes turns and pickaxe durability. After ex…