📜 Key facts
| Age | Young volcanic glass, typically less than a few million years old |
|---|---|
| Origin & sources | Mexico (Jalisco) and the western United States, including Oregon and California. |
| Composition | Volcanic glass with layers of tiny, aligned gas bubbles or microscopic crystals |
How it forms
As obsidian lava flowed, gas bubbles and microcrystals were stretched into thin, parallel layers. These reflect light as a silvery sheen when the stone is cut parallel to them.
Mineral data: see Obsidian.
🌍 Where it's found
- Type locality
- Notable source / deposit
- Country of origin
Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.
✨ Obsidian family
Learn more
Mineral variety
Gray
RootThird Eye
Healing crystal


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