quartz
UK: kwɔːts | US: kwɔːrts
n. a hard, crystalline mineral composed of silicon dioxide (SiO₂), widely occurring in igneous, metamorphic, and sedimentary rocks.
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The word "quartz" originates from the German Quarz, which likely stems from the Slavic tvŭrdŭ (meaning "hard"), referencing the mineral's durability. The term entered English via mining terminology in the 16th century. As a non-compound word with no clear prefix/root/suffix structure, it retains its unified form.
The mountain’s cliffs sparkled with veins of quartz.
Quartz is a key component in many electronic devices due to its piezoelectric properties.
She collected rose quartz for its purported healing energy.
The geologist identified the clear crystal as pure quartz.
Ancient tools were often made from flint or quartz.