opal
noun
a mineral, an amorphous form of silica, SiO 2 with some water of hydration, found in many varieties and colors, including a form that is milky white.
opals
-
pluralof opal.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Piller juxtaposes opals, garnets and pearls with less conventional materials such as tile fragments, snakeskin, bits of lava from a trip to Iceland, and bullet casings, all bound together with strips of leather or vinyl.
From Los Angeles Times ● Dec. 30, 2025
At moments, as the rays of the setting sun flooded across the Potomac River, the upper branches of many trees seemed to glow as might a sea of opals and rubies.
From Washington Post ● Apr. 2, 2022
According to the auction house, the opal, dubbed the “Americus Australis,” weighs more than 11,800 carats and is one of the largest gem-quality opals in existence.
From Seattle Times ● Feb. 18, 2022
Some of Ms. Harris’s designs come in solid gold and others in platinum; many are clustered with brilliant diamonds or opals.
From New York Times ● Jan. 27, 2022
She was dressed from head to foot in black satin, and many magnificent opals gleamed at her throat and on her thick fingers.
From "Harry Potter And The Goblet Of Fire" by J. K. Rowling
