obsidian
/əbˈsɪdiən/
hard, dark, glass-like volcanic rock
“His eyes were black as obsidian.”
Origin: Latin obsidianus; used for Aztec blades
/əbˈsɪdiən/
hard, dark, glass-like volcanic rock
“His eyes were black as obsidian.”
Origin: Latin obsidianus; used for Aztec blades