Talk:In-App Purchases/@comment-26985695-20150914101655

It is possible from doing achievements such as League All-Star achievement. For reaching Crystal League (2,000-2,599 trophies) you gain 250 gems, for reaching Master League (2,600-3,199 trophies) give you 1,000 gems and reaching Champion League (3,200-4,099 trophies) gives you 2,000 gems. There is no gem reward for reaching Titan League (4,100-4,399 trophies) or Legend League (5,000+ trophies) yet but may be added in the future. This is a good way to get gems without spending money as you receive a decent amount of gems.