Anything except wood.
You need an iron pickaxe or diamond pickaxe.
Minecraft* You need a stone pickaxe to mine iron in Minecraft.
No, you need at least a Stone pickaxe, to mine the Iron Ore.
In order to collect diamonds in Minecraft, you have to have an iron pickaxe, if you are wondering how to get iron, you have to have a cobblestone pickaxe and find the brownish looking ore then mine it. Once you have it, you need to cook it into iron ingots then craft an iron pickaxe then there you have it.
For Vanilla Minecraft, you will need a stone pickaxe (or better) to mine iron ore.
You need an iron pickaxe to get redstone in Minecraft.
Yes - an iron pickaxe is required to mine diamond.
Yes you can but you need to mine it with an iron pickaxe
You need at least an Iron Pickaxe.
You need an iron pickaxe. Also, you need a stone pickaxe to mine iron and a wooden pickaxe to mine stone.
You need a Iron or Diamond Pickaxe to mine Emerald.
Iron pickaxe,gold or diamond