obsidian Synonyms

black as the ace of spades black as night black as Newgate's knocker black as coal black as a dog's guts Apache tear melanoid tektite cristobalite lechatelierite moss agate tridymite tachylyte swart stygian starless black as thunder coaler inklike very dark utterly black totally black black in color completely black black as a skillet black as midnight black as pitch pitch-dark pitchy volcanic glass tachylite dark as night sloe slater jet inky granite fulgurite ebony ebon dark coulee coal-black charcoal calcite black bituminous basalt atramentous atramental jetty