black opal

1. 1.

   a dark colored opal with internal reflections of green or red

   Broaderopal

Questions about black opal

What does black opal mean?

black opal means "a dark colored opal with internal reflections of green or red".

Is black opal a common word?

black opal is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.