Nether Brick

Nether Brick is an Item, that is made by smelting Netherrack - a naturally spawning block, that can only be found in the The Nether - in a furnace. One its own, nether brick cannot be used, but when crafted together, in a Crafting Table, it can be made into nether bricks. Nether bricks can also be crafted into nether brick fences, nether brick stairs and nether brick slabs. The only other way of obtaining nether bricks is by finding a Nether Fortress (in the nether), where nether bricks, nether brick fences, nether brick stairs, and even sometimes nether brick slabs are all found naturally.

History
Netherziegel (Item) Ladrillo del Nether Brique du Nether (objet) 地狱砖 Адский кирпич (предмет)