dec: 388 hex: 184 bin: 110000100
Emeralds are items used as "currency," normally obtained by, and used for, trading with villagers. They can also be found in desert and jungle temples, and by mining Emerald Ore, found sporadically in Extreme Hills biomes in groups of one, but they are very hard to find so it is much easier to obtain them from villagers.
Emerald Ore can be found in layers 1-30 in an Extreme Hills biome, in veins of one, and can only be mined using an iron or diamond pickaxe.
Note that the emerald ore block cannot be obtained without the Silk Touch enchantment. If an emerald ore block is obtained, it is much more efficient to place the block and mine it with a pickaxe with the Fortune enchantment.
Emeralds can be used for trading with villagers, as well as powering the beacon and building a pyramid-socket for it out of blocks of emeralds, but cannot be used to make tools or armor. To trade with villagers, right-click them, and a trade menu will appear. To trade emeralds with villagers, the player must place them into the trading menu's left slot in the amount requested above the slot. The player can then take the resulting item from the right slot. This applies conversely to obtaining emeralds in trade. Trading is a much easier and less time consuming way to obtain emeralds than mining is. Trading with villagers provide the player a variety of items, many which are hard to get and not renewable otherwise. This is why emeralds could be considered important for acquiring other resources.
 As a crafting ingredient
|0.31||On January 29th, 2010, Diamonds were added. In the code, they were referred to as emeralds.|
|May 21, 2012||Jeb released a screenshot of himself testing the trading system. At this time, what would become Emeralds were Rubies. Rubies can still be found in the (at this time unused) file "items.png", and look like this:
|1.3.1||12w21a||Added emeralds and emerald ore. Emeralds could be traded with villagers in exchange for different items.|
|12w22a||Block of Emerald was added, which is crafted from nine emeralds, and can be placed as a decorative block.|
|1.4.2||12w32a||As zombie villagers can now spawn and be cured, emeralds can still be obtained in trades even if generated structures are disabled.|
|Pocket Edition Alpha|
|0.9.0||build 1||Added emeralds.|
|build 5||Added the recipe to craft emeralds.|
Issues relating to "Emerald" are maintained on the issue tracker. Report issues there.
The first image of the trading system released by Jeb. What would become Emeralds can be seen in the inventory space.
A wall of emerald ore utilizing a previous texture in snapshot 12w21a.
- Snapshot 12w21a/b lang/en_US.lang: item.ruby.name=Ruby