1
: a mineral consisting of silicon dioxide occurring in colorless and transparent or colored hexagonal crystals or in crystalline masses
2
: a quartz crystal that when placed in an electric field oscillates at a constant frequency and is used to control devices which require precise regulation
a quartz watch
Examples of quartz in a Sentence
Recent Examples on the Web
Even in those earliest of gloomy days, oxygen — the element O — was all over the place, bound up in molecules like water vapor and quartz and carbon dioxide.
—
Laura Poppick, Rolling Stone, 30 June 2025
In the 1880s, brothers Pierre and Jacques Curie discovered that quartz crystals can generate a consistent electrical signal when subjected to mechanical stress.
—Markus Lutz, Forbes.com, 23 June 2025
Kelli, proud of a successful trip but wary of returning home to her rocky divorce situation, shares with the group that right after a particularly hard phone conversation with her lawyer, the rose quartz she’s kept on her during the vacation broke in half.
—Ile-Ife Okantah, Vulture, 16 June 2025
The design was reinterpreted in two bold sunglasses options, an amber frame with blue mineral lenses and a quartz rose iteration with brown lenses.
—Martino Carrera, Footwear News, 23 Apr. 2025
See All Example Sentences for quartz
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Laura Poppick, Rolling Stone, 30 June 2025
In the 1880s, brothers Pierre and Jacques Curie discovered that quartz crystals can generate a consistent electrical signal when subjected to mechanical stress.
—Markus Lutz, Forbes.com, 23 June 2025
Kelli, proud of a successful trip but wary of returning home to her rocky divorce situation, shares with the group that right after a particularly hard phone conversation with her lawyer, the rose quartz she’s kept on her during the vacation broke in half.
—Ile-Ife Okantah, Vulture, 16 June 2025
The design was reinterpreted in two bold sunglasses options, an amber frame with blue mineral lenses and a quartz rose iteration with brown lenses.
—Martino Carrera, Footwear News, 23 Apr. 2025
See All Example Sentences for quartz
Cite this Entry
“Quartz.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quartz. Accessed 7 Jul. 2025.
Copy CitationKids Definition
quartz
noun
: a common mineral consisting of silicon dioxide that is often found in the form of colorless transparent crystals but is sometimes (as in amethysts, agates, and jaspers) brightly colored
Medical Definition
quartz
noun
: a mineral SiO2 consisting of a silica that occurs in colorless and transparent or colored hexagonal crystals and also in crystalline masses
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