Why do gems get corrupted?

Related questions

1. What do you do with orbs of transmutation?
2. Where are the Vaal ruins?
3. Where is the Startup folder in Windows 7?
4. What do exalted orbs do?
5. What is chaos damage PoE?
6. Does path of exile have microtransactions?
7. How do I upgrade my magic to rare PoE?
8. How do you price currency in Path of Exile?
9. What does a divine orb do?
10. Which is hot key?

Tags

1. #homeworld
2. #unfolded
3. #events
4. #diamond
5. #which
6. #effort
7. #normal
8. #great
9. #corrupted
10. #ditch
11. #rebellion
12. #before
13. #authority
14. #earth
15. #corrupting
16. #cause
17. #light