Minecraft wiki entry for The_second_day, associated text: You're unlikely to find these on your second day, but it's worth knowing a little about the more advanced ores. Gold, lapis lazuli, and redstone are more specialized ores, found only in deeper parts of the caves. Diamond is the top-tier crafting material found in the Overworld, while emerald is used to trade with villagers. Lapis can be mined with a stone pickaxe, but the remaining ores all need an iron pickaxe. Some key uses: