: a usually amorphous mineral that is a hydrated silica softer and less dense than quartz and typically with definite and often marked iridescent play of colors and is used especially as a gem
Examples of opal in a Sentence
Recent Examples on the Web
Opalite is a song about love, which is fitting since Kelce’s birthstone is the opal.
—
Lisa Respers France, CNN Money, 6 Feb. 2026
For one thing, opalite is a manmade version of the natural stone opal, which happens to be Kelce’s October birthstone.
—Lisa Gutierrez, Kansas City Star, 6 Feb. 2026
The Oscar-winning screenwriter and filmmaker added a black opal, diamond and platinum necklace by Cartier to her deep red dress.
—Julia Teti, Footwear News, 5 Feb. 2026
Do not use Windex on softer gems like pearls, opals, or emeralds, because the ammonia may damage them.
—Melissa Locker, Southern Living, 28 Jan. 2026
See All Example Sentences for opal
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Lisa Respers France, CNN Money, 6 Feb. 2026
For one thing, opalite is a manmade version of the natural stone opal, which happens to be Kelce’s October birthstone.
—Lisa Gutierrez, Kansas City Star, 6 Feb. 2026
The Oscar-winning screenwriter and filmmaker added a black opal, diamond and platinum necklace by Cartier to her deep red dress.
—Julia Teti, Footwear News, 5 Feb. 2026
Do not use Windex on softer gems like pearls, opals, or emeralds, because the ammonia may damage them.
—Melissa Locker, Southern Living, 28 Jan. 2026
See All Example Sentences for opal
Cite this Entry
“Opal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/opal. Accessed 15 Feb. 2026.
Copy CitationKids Definition
opal
noun
: a mineral with changeable colors that is used as a gem
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