Ancient Debris

Ancient Debris is a rare ore that is the only reliable source of netherite.

Obtaining
Ancient debris drops as an item if mined by a diamond pickaxe or better. If mined by any other tool, it drops nothing.

Mineral veins
Ancient debris can generate in the Nether in the form of mineral veins. Ancient debris generates like lapis, and can spawn in any Nether biome at any level, but is most commonly found at altitude 15. It generates in loose clusters, usually of size 1-3.