Ruby

Note that this does not exist in Minecraft; it was written purely as a fiction article.

Rubies are fairly rare items found deep underground in the bottom 30 layers of the map. They will be found in branches of 3-10. They require an Iron Pickaxe or better to collect.

Uses
Rubies can be crafted to make Ruby tools, which are in-between Iron and Diamonds. Ruby tools have 752 uses before breaking and will mine 1.5x faster than Iron tools. They can also be traded to Villagers.