obsidian
Definitions
A hard, dark, glasslike volcanic rock formed by the rapid solidification of lava.
A deep, glossy black color resembling that of the volcanic glass.
Examples
The ancient blade was crafted from a sharp, polished piece of black obsidian.
The volcanic landscape was covered in jagged shards of obsidian that glistened under the sun.
She wore a necklace featuring a smooth, teardrop-shaped pendant made of dark obsidian.
Synonyms
volcanic glass natural glass igneous rock vitreous stone black glass