These red torches create light but not enough to prevent mobs from spawning. Redstone is Minecraft's version of electricity, so redstone torches are most commonly used as part of circuits.They also create a spooky atmosphere, so you could use them when building a haunted house. This is found when mining deep underground. To mine redstone, you need at least an iron pickaxe. This recipe is the same as a normal torch, but with redstone instead of coal. You can also make redstone torches flicker.

TL;DR in Indonesian:
Buatlah obor redstone untuk sirkuit redstone. Carilah redstone. Letakkan redstone di atas tongkat di dalam kotak kerajinan.