obsidian gemstone meaning
Obsidian Gemstone meaning. With its glassy luster, obsidian is a distinctive stone. Obsidian is formed as lava from volcanic eruptions cools within the earth.The speed at which it cools prevents crystallization and the rock forms as solid volcanic glass.Although its most common color is black, obsidian can also be found in light brown, brown mottled with black, and black with a beautiful golden or silvery sheen.he speed at which it cools prevents crystallization and the rock forms as solid volcanic glass. Although its most common color is black, obsidian can also be found in light brown, brown mottled with black, and black with a beautiful golden or silvery sheen.