|Ruby||File:Grid Ruby.png||ID: 1257|
|Emerald||File:Grid Emerald.png||ID: 1257:1|
|Sapphire||File:Grid Sapphire.png||ID: 1257:2|
Gems, currently just rubies, sapphires, and emeralds, are added by RedPower. With the exception of Emeralds, which can be used to make the Sonic Screwdriver, the only use for them is to make tools with the speed of diamond tools but a durability of just 500. They cannot be crafted into armor. An iron pickaxe or better is required to mine gems.
Each gem is worth 1024 EMC.
The Tekkit Emerald is not the same as the vanilla Emerald and cannot be used to trade with villagers in 1.3.2.
Every Gem is used to make the following items: Pickaxe, Axe, Shovel, Sword, Hoe, Sickle, Handsaw, and a Gem Block of their respective type. The only exception to this is the Emerald, which is used to craft the Sonic Screwdriver.