GemBlocksForGreg by UltraPeeks
Adds storage blocks for the gems used in gregtech. To be used with GregTech 5.07.07.
GemCraft by Sanguine045
Ever think that emeralds are a vastly underimplemented part of the game? well here you go! this mod adds two more types or gemstone (sapphire and ruby) as well as full tool and armor sets for all three types of gem.