Is Obsidian a gem?

Related questions

1. What is obsidian used for in Ark?
2. What is Onyx worth?
3. Is green obsidian man made?
4. How do you cleanse Obsidian?
5. What's the difference between Onyx and Obsidian?
6. How do you cleanse and charge Moonstone?
7. Can Obsidian cut through cells?
8. Is Obsidian radioactive?
9. Can you break obsidian in real life?
10. Is Obsidian found in Pennsylvania?

Tags

1. #antiquity
2. #crystalline
3. #whilst
4. #obsidian
5. #occurring
6. #structure
7. #complex
8. #composition
9. #cools
10. #mineral
11. #volcanic
12. #forms
13. #which
14. #gemstone
15. #because
16. #considered
17. #naturally
18. #glass
19. #since