Obsidian is volcanic glass and is found in several colours including - black, grey, dark green, red, yellow and pink. mostly black
It is also very sharp; it can be used to make knives
obsidian rocks are red and black also sometimes orange
Probably white because of the high silicon dioxide content.
The rock you are describing is likely obsidian. Obsidian is a naturally occurring volcanic glass formed during rapid cooling of lava. It is usually black in color and has a smooth, glassy texture.
Granite is a coarse grained igneous rock without Pyroxene.
A black glass-like rock could be obsidian, which is a natural volcanic glass formed from rapidly cooled lava. Obsidian is usually black in color and has a shiny, glassy appearance due to its lack of crystalline structure. It is commonly used in jewelry and decorative objects.
obsidian rocks are red and black also sometimes orange
Obsidian is a type of black glass.
burritos
? Wholesale $.50 A Lb. ? Retail $1.00 - $12.00 a Lb. Obsidian is glass, and the value depends on the color it is and the type it is
Obsidian is a beautiful rock. It's description is pretty simple, it is a rock that formed out of cooled lava, and is black in color.
Probably white because of the high silicon dioxide content.
Obsidian rock typically appears black, but it can also have a slight sheen and exhibit various colors like brown, green, or red due to impurities or inclusions in the rock.
Obsidian because it's the only mineral that is the blackest of well......black! Anyway it's black I mean Obsidian (\_/) (o.o) (___)o
The name of the dense volcanic glass that is typically black in color is obsidian.
The rock you are describing is likely obsidian. Obsidian is a naturally occurring volcanic glass formed during rapid cooling of lava. It is usually black in color and has a smooth, glassy texture.
it's usually dark, a dark green/brown/black....it is not an exact color.
It is rare but obsidian can be blue, green, red, orange or yellow. I have an orange one with yellow swirls. Geology.com confirms my assertion.