The very first thing you might see is dirt (Very basic).
Next thing is stone (You need a wood or better pickaxe to mine it).
Coal is next (You need a wood or better pickaxe to mine it).
Iron (you need a stone or better pickaxe to mine it).
Gold is strong (You need a iron or better pickaxe to mine it).
Redstone is powered (You need a iron or better pickaxe to mine it).
Diamond is last (You need a iron or better pickaxe to mine it).
<–diamond