Gems are rewards that are earned through certain quests . They also drop off mobs with the progress of the game. In order to give you additional rewards Gems can be placed into sockets in Chest Armor and Head Armor. Gems are a crucial component of numerous Horadric Cube recipe. This guide will teach you how to improve your gear with Gems, as well as the best way to eliminate unnecessary Gems and increase the number of Gems.  For Classic players (those choosing not to play the Lord of Destr...