Diamond Ore (Minecraft)

You are in the mine with an iron pick in your hand, you find almost nothing good. All you find is just iron, gold, and the occasional redstone but never a diamond ore. That is until you find a lake of lava and above that lake you see a blue mineral, you can't tell if it is lapis lazuli or diamond so you put a torch and... It was nothing, your eyesight had confused you thinking that you had gotten a diamond ore

Diamond Ore