What are the hardest blocks to break in Minecraft?

Related questions

1. What is the blast radius of TNT in Minecraft?
2. Does TNT work underwater in Minecraft?
3. What does TNT mean in texting?
4. How do u make TNT on Minecraft?
5. Can TNT destroy Obsidian?
6. How many blocks does TNT destroy in Minecraft?
7. What category is TNT in Minecraft?
8. What does TNT mean in Minecraft?
9. Will TNT destroy diamond ore?
10. Can you mine TNT in Minecraft?

Tags

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2. #contact
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4. #roughly
5. #pickaxe
6. #collected
7. #created
8. #takes
9. #other
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13. #minute
14. #minecraft
15. #about
16. #flowing
17. #seconds
18. #sadly
19. #mining
20. #hardest
21. #diamond
22. #water
23. #material
24. #obsidian
25. #comes