black opal

American  

noun

Mineralogy.

1. a dark variety of opal having the characteristic opaline play of color.

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black opal British  

noun

1. any opal of a dark coloration, not necessarily black

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Example Sentences

She has rings for him to don at his opening, including a black opal that sparkles in the sun.

From Los Angeles Times • Nov. 17, 2022

Howard Ratner did not smuggle an Ethiopian black opal inside a fish and then make a six-way parlay bet on the Celtics to be shrugged off this way.

From Slate • Dec. 27, 2019

Plenty of my friends were as spellbound by the movie’s cacophonous sound design and jagged, glitzy energy as Kevin Garnett is by that dubiously sourced hunk of black opal.

From Slate • Dec. 27, 2019

KG, as they call him in the film, becomes obsessed with this black opal that's a centerpiece of the story.

From Salon • Dec. 18, 2019

The place had always been called Fallen Star Ridge after that; but opal was not found there, and it did not begin to be known as the black opal field until several years later.

From The Black Opal by Prichard, Katharine Susannah