No, it was used as spear points by Native Americans.
Gem dragon .. Just did it myself :)
Obsidian is a form of glass. Glass can only form when material cools from a molten state.
There is a sign find the complete gem just look very closely with the thing on the side and you will find it.
Gem-in-i
Both coal and obsidian are types of rocks that are formed from cooling molten material. However, coal is primarily composed of organic matter such as plant material, while obsidian is a naturally occurring volcanic glass with a dark color and smooth texture.
The second strongest building material is obsidian even though it can't get blown up.
No, Obsidian is the sharpest material on earth. Diamond however, is the hardest.
This is taken from the Wikipedia article: "Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock." Igneous means that the material obsidian is made of is molten initially. Extrusive means that the material pours or explodes out of volcanoes, as opposed to remaining under the earth's surface. See links for more.
No, diamond cannot break obsidian. Obsidian is harder than diamond on the Mohs scale, which measures the hardness of minerals. Diamond itself is the hardest natural material, but it cannot scratch or break obsidian due to its unique molecular structure.
The igneous rock you are describing is likely obsidian. Obsidian is a naturally occurring volcanic glass formed from the rapid cooling of molten lava. Its smooth, glassy texture and black color make it a popular material for decorative items and tools.
Obsidian is a form of an igneous rock that forms when molten rock material cools so rapidly that atoms are unable to arrange themselves into a crystalline structure.
Obsidian typically sinks in water due to its high density. It is a type of volcanic glass that forms from the rapid cooling of lava, creating a material denser than water.