Redstone

Redstone Ore is commonly found deep underground. It currently is of no use except for llumination when mining in a dark place. You will be able to collect redstone when 0.8.0 comes out, but until then when it is mined nothing will be yielded.

Trivia

 * In Minecraft for PC and Xbox 360, redstone is used as the main power source. Redstone dust may be added in the future.
 * Only jailbroken idevices could recive redstone dust for a limited time but it couldn't be layed out. If it was tapped on, your game would crash
 * Redstone lights up for 45 seconds if tapped on by the player
 * Redstone was one of the first ores implanted into the game's code.