Nether Star

The nether star is an item drop from the wither that is used solely to craft beacons.

Withers
The nether star can only be obtained by defeating the wither, which is a boss (refer to the Ender Dragon). One nether star will be dropped each time, regardless of enchantments used to kill the mob.

Usage
Nether stars have the same animated glow that enchanted items and potions have.

The dropped nether star cannot be destroyed by explosions. However, it can still be destroyed by fire, lava, and cacti.

It is also used to craft a Beacon.

It can also summon pigzilla a mod for Minecraft 1.7.2. by using a Compressed Raw Porkchop.

Gallery
Netherstern Estrella del Inframundo Étoile du Nether Alvilági csillag Stella degli Inferi ネザースター 네더의 별 Netherster Gwiazda Netheru pt-br:Estrela do Nether Звезда Нижнего мира 下界之星