Redstone

Redstone is an item that was added in Update 0.8.0. It is obtained from mining Redstone Ore. Redstone may also be found in small quantities inside Dungeon Chests.

Obtaining
It is possible to obtain Redstone Dust from Redstone Ore with an Iron Pickaxe or higher. In Update 0.14.0 Redstone has a chance to be dropped by Witches when killed.

Uses
Redstone is mainly used as wiring to make mechanisms. It is also a crafting ingredient used in many components used to make such mechanisms. Redstone is also an important ingredient for Brewing, which when used extends a Potions effect period.

Crafting

 * 6 Gold Ingot + 1 Stick + 1 Redstone => Powered Rail
 * 4 Iron Ingot + 1 Redstone => Compass
 * 4 Gold Ingot +1 Redstone => Clock
 * 9 Redstone Dust => Redstone Block
 * 1 Redstone + 1 Stick => 4 Redstone Torch
 * 8 Wooden Planks + 1 Redstone => 1 Note Block
 * 4 Redstone Dust + 1 Glowstone => 1 Redstone Lamp
 * 7 Cobblestone + 1 Redstone => 1 Dropper
 * 7 Cobblestone + 1 Redstone + 1 Bow => 1 Dispenser
 * 3 Stone + 2 Redstone Torch + 1 Redstone => 1 Redstone Repeater
 * 3 Wooden Planks + 4 Cobblestone + 1 Iron Ingot + 1 Redstone => 1 Piston

Trivia

 * Redstone could not be placed as wiring before Update 0.13.0.
 * At the time of Update 0.7.4, there was a splash message saying 'Redstone Free!' because red stone didn't exist in the game, other than the ore block. Mining the ore block at that time gave nothing, even with an Iron or Diamond Pickaxe.
 * The splash was removed in Update 0.8.0 when Redstone Ore could be mined and yielded.