Is Obsidian rare?
Is Obsidian rare? Obsidian is the most common form of natural glass and occurs in many attractive varieties.
Obsidian is the most common form of natural glass and occurs in many attractive varieties.
How strong is Obsidian?
Obsidian is rated at 5 to 5.5 on the Mohs scale of mineral hardness, with diamond rated at 10, and talc rated at 1. It has very high tensile strength, but is also very brittle due to low compressive strength. These characteristics have made it an ideal material for tool making for over 700000 years.
Is rainbow obsidian rare?
This exceptionally rare form of obsidian displays rainbow colors when it’s displayed at the correct angle. These colors are usually quite bold and intense, but the obsidian retains a black appearance from most angles.