Specimen
Raw Obsidian
The odd one out: lava cooled so fast that no crystals could form at all, leaving glass. It has no crystal system and no cleavage, and it breaks in smooth curved shells that hold an edge sharper than a scalpel.
Photographed, not listed for sale yet.
This piece gets a price when it is ready to sell.
- Hardness
- Mohs 5-5.5
- Crystal system
- amorphous, no crystal structure
- Family
- volcanic glass
- Luster
- vitreous
- Streak
- white
- Cleavage
- none; conchoidal fracture
Where obsidian is found in the field, on the rockhounding map
