Gems are very important in Clash Of Clans game.Thanks to these, you can progress faster in the game. In short, the more Gem, the more power.Thanks to these, you can progress faster in the game. In short, the more Gem, the more power. Completing all the missions in the game earns you about 9000 Gem. Also when you start the game you will be given 500 Gem. For more free Gems, you have to complete more missions. Gem surprises await you in most of the above calculations.