Diamonds. But in the next update (which is 1.3) emeralds are going to be the rarest item in the game.
there are no horses
its not a rock but it is the rarest without a mod is emerald ore
Emerald I think
In Minecraft, the gold block is data value 41.
What is the strongest block in minecraft
A minecraft block is 1 Meter to scale in real life.
The hardest block in Minecraft is bedrock. It is completely unbreakable unless on creative mode.
There is no command block in minecraft. If you go to the Minecraft WiKi it will have all the information you need for anything in the game.
Command Blocks
The rarest ore in Minecraft is emerald ore. Emerald ore can only be found in extreme hills biomes and only spawn as an individual rather than in veins. Emerald ore can be mined with an iron or diamond pickaxe.
active camo spartan with spartan
Minecraft is a block related game. The developers never intended for their to be circles in minecraft.