WHAT ARE EMERALDS?
Emeralds are a bright gemstone, and also Minecraft’s primary currency! You can have as much gold, diamond, or redstone as you like – no villager is going to sell to you unless you can pass on some of those precious green stones.
Unlike most other items, emeralds have no real use for crafting – you can create blocks of emerald out of nine emeralds if you like, but these are only useful as decoration or storage. The only use emeralds have outside of trading is as the power-up item for a beacon.
SCAVENGING
Perhaps the easiest way to get emeralds is