This page of our wiki of Minecraft introduces you to all material blocks encountered in the game. They are 7 in number, and are easily recognizable by their color. For each block, we describe at which layer to find themTheir utility et which tool to use.
gold ore
Where to find it: Layers 5-29 of the normal Minecraft world
Usefulness: allows you to obtain gold bars
Tool to mine it: iron pickaxe or better
Iron-ore
Where to find it: Layers 5-54 of the normal Minecraft world
Usefulness: allows you to obtain iron ingots
Tool to mine it: stone pickaxe or better
coal ore
Where to find it: Layers 5-52 of the normal Minecraft world
Usefulness: allows you to obtain coal
Tool to mine it: wooden pickaxe or better
Lapis lazuli ores
Where to find it: Layers 14-16 of the normal Minecraft world
Usefulness: allows you to obtain lapis lazuli
Tool to mine it: stone pickaxe or better
Diamond ore
Where to find it: Layers 5-12 of the normal Minecraft world
Usefulness: allows you to obtain diamonds
Tool to mine it: iron pickaxe or better
Redstone ore
Where to find it: Layers 5-12 of the normal Minecraft world
Usefulness: allows you to obtain redstones
Tool to mine it: iron pickaxe or better
emerald ore
Where to find it: Layers 5-29 of the normal Minecraft world
Usefulness: allows you to obtain emeralds
Tool to mine it: iron pickaxe or better