Is Obsidian the sharpest material?

Related questions

1. Is Obsidian rare?
2. Does black tourmaline need cleansing?
3. Is green obsidian real?
4. How do you cleanse and charge black obsidian?
5. How do you cleanse Obsidian?
6. What type of rock is obsidian?
7. How can you tell the difference between Onyx and Obsidian?
8. What is black obsidian good for?
9. Can you break obsidian in real life?
10. Is Obsidian radioactive?

Tags

1. #sharpest
2. #fracture
3. #under
4. #appears
5. #smooth
6. #sharper
7. #single
8. #still
9. #times
10. #microscope
11. #steel
12. #whereas
13. #magnification
14. #obsidian
15. #blade
16. #since
17. #cutting
18. #hundred
19. #claimed