Minecraft PC Wiki
120px-Ruby (Item).png

Ruby is seen above the emerald.

Ruby Ore was planned for Minecraft, but was abandoned due to Dinnerbone's red/green colorblindness, as well as that of others. Emerald Ore was added instead. It is unknown if Ruby Ore would have special spawning requirements like Emerald Ore does. When mined, it would presumably drop a Ruby by default. In some mods, such as the Medieval Weapons mod, this ore still exists for use of crafting certain items.

Tool used Rarity For tools For Armor
Probably Iron or Diamond Pickaxe Unknown, but possibly as rare as Emeralds. Unknown Unknown