: 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
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The opal found its match in a design playing on triangles as a symbol of know-how but also the French brand’s initials and trunk elements, such as its metal corners, and the vibrant green of bead emeralds and a 28-carat Zambian emerald drop complementing its fiery flashes.
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Lily Templeton, Footwear News, 27 May 2025
One stunning example featuring ruby root, opals, spinel, and mandarin garnets was reportedly among the first pieces to sell.
—Paige Reddinger, Robb Report, 19 June 2025
The center gem is a large opal, glittering and bright, just like our sun.
—Jessica Rendall, Space.com, 4 June 2025
The star is its light pink opal, which is surrounded by a string of gold beads.
—Izzy Baskette, People.com, 30 May 2025
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Lily Templeton, Footwear News, 27 May 2025
One stunning example featuring ruby root, opals, spinel, and mandarin garnets was reportedly among the first pieces to sell.
—Paige Reddinger, Robb Report, 19 June 2025
The center gem is a large opal, glittering and bright, just like our sun.
—Jessica Rendall, Space.com, 4 June 2025
The star is its light pink opal, which is surrounded by a string of gold beads.
—Izzy Baskette, People.com, 30 May 2025
See All Example Sentences for opal
Cite this Entry
“Opal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/opal. Accessed 25 Jul. 2025.
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opal
noun
: a mineral with changeable colors that is used as a gem
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