What is black obsidian good for?

Related questions

1. What can you make with Obsidian?
2. How much is obsidian cost?
3. Is Obsidian a precious stone?
4. Is green obsidian man made?
5. What is obsidian made of?
6. Can Obsidian cut through steel?
7. What is Onyx worth?
8. Is Obsidian good luck?
9. Is Obsidian the same as Apache tears?
10. Can you break obsidian in real life?

Tags

1. #stones
2. #metaphysical
3. #energy
4. #properties
5. #against
6. #black
7. #stimulate
8. #negativity
9. #psychic
10. #these
11. #prophesy
12. #cleanser
13. #protection
14. #shield
15. #obsidian
16. #within
17. #created
18. #powerful
19. #stone
20. #strong