Emerald Ore is a rare ore that can be found in mountains and hills. It is the only source of naturally generated emeralds. They have a variant known as Deepslate Emerald Ore which can only be found in the deepslate layers and tuff layers of the Overworld.
A block of emerald ore (via screenshot)
Emerald ore and its variants are naturally generated only in mountains, frozen peaks, and windswept hills biomes. Once you have found an emerald ore, you will have to break it with an iron, emerald, or netherite pickaxe so that it drops emeralds and 3-7 experience orbs. When mined with any other tool you will not receive anything.
Deepslate emerald ore deep underground (via screenshot)
Emerald ore when broken will drop individual emeralds. Emeralds are used to trade with villagers and wandering traders. They can also be turned into blocks that can be used to power beacons.
An emerald dropped by a block of emerald ore (via screenshot)
Emerald ore is an important mineral block that provides players with one of the best items for trading. It's very hard to come by, making it an unreliable source of emeralds.
A. Emerald ore is one of the rarest ores in the game.
A. Yes, you can pick up emerald ore if it is mined with a tool with the silk touch enchantment on it.
A. No, once an emerald ore block is broken, it will drop emeralds that can be used without smelting.