Obsidian was known to primitive peoples who fashioned this material into points for weapons and into edges for tools. In that light, no one "discovered" this amazing material we sometimes call volcanic glass. It was "discovered" well in excess of ten thousand years ago. Its use predates any writing by many ages. Links can be found below to related posts and questions.
Neither, obsidian mirrors were first discovered in Anatolia (modern-day Turkey).
Obsidian is a natural glass.
Other names for obsidian is Apache tears, volcanic glass, and Black obsidian.
No
Mostly from the Aztec city-states of Pachuca and Otumba. Pachuca's greenish obsidian was considered better quality, and was favored, but Otumba's greyish obsidian was also in common demand.
Someone found it centuries ago.
Neither, obsidian mirrors were first discovered in Anatolia (modern-day Turkey).
One type of obsidian is snowflake obsidian, which is black with white mineral inclusions that resemble snowflakes.
No. Obsidian is brittle.
Obsidian is an igneous rock.
Obsidian is, itself, a mineral.
yes obsidian is a crystal.
Obsidian is a natural glass.
The first use of obsidian from the Anatomically Modern Humans (our species) seems to have happened about 125,000 years ago, on the shores of the Red Sea (Walter et al., Nature 405, 2000). massimo rapisarda it was used as a weapon for hunting
Other names for obsidian is Apache tears, volcanic glass, and Black 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.
Obsidian is not magnetic.