English Name：Spider Web Obsidian
amorphous, siliceous glassy rock
- 1.51 (SR)
Colour：Bluish Black, Greyish Black
Remarks：it often has flow
lines that create interesting pattens. It was recently
discovered in Chihuahua, Mexico.
Other types of obsidians including: Apache Tears, Rainbow
Obsidian, Golden Sheen Obsidian, Silver Sheen Obsidian.