Obsidian Facts
Obsidian Facts
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Obsidian Properties
| Chemical Composition | It is Silicon Di Oxide and the chemical formula is SiO2. |
| Colours | Black, Dark Green, Dark Brown. Other rare colours are blue, gray, red and orange. |
| Streak | White. |
| Varieties | Snowflake Obsidian , Sheen Obsidian and Rainbow Obsidian. |
| Specific Gravity | Approximately 2.6 |
| Refractive Index | 1.48 -1.50 |
| Luster | Vitreous to glassy. |
| Crystal System | Not Applicable. It is amorphous in nature. |
| Hardness | 5 – 5.5 Mohs. |
| Solid State | Opaque to translucent. |
| Fractures | Conchoidal. |
| Source | United States, Hawaii, Japan, Iceland, Java, Hungary, Russia, Ecuador, Italy, Mexico and Scotland. |
| Enhancement | Not enhanced. |
| Precautions | Protect from sharp blows, scratches, harsh chemicals and cosmetics. |