Obsidian is a glasslike volcanic rock that ancient people made arrowheads and spear points from. Some of these are wonderful works of craftsmanship.
No. Obsidian is brittle.
One type of obsidian is snowflake obsidian, which is black with white mineral inclusions that resemble snowflakes.
Obsidian is, itself, a mineral.
yes obsidian is a crystal.
Obsidian is a natural glass.
Obsidian is an igneous rock.
Other names for obsidian is Apache tears, volcanic glass, and Black obsidian.
Obsidian is not magnetic.
how is obsidian dependent on minerals
Snowflake Obsidian
If their business is in dealing with obsidian products, and they do not own any obsidian mines, then yes they will need to buy it. If however they do not need obsidian then they do not have to buy it.
The common name for obsidian rock is volcanic glass.