The Emerald is the second tier out of 6 available gems.
A player will at least need 13 Emeralds to upgrade tools with. Tools have to be upgraded with a Sapphire first.
|1 each||Require upgrade with Sapphire first|
|variable||Enchanted version gives double stardust|
|variable||The Emerald Key Chest has 3 item slots|
|5||Double the mined quartz from crushers|