common topaz
- noun
- A geologist explained the difference between common topaz and real topaz during the lecture.
Examples
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Many people confuse common topaz with the actual gemstone topaz due to its color.
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She purchased a necklace featuring a common topaz set in silver.
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Look at that stunning common topaz!
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I found a common topaz today.
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A jeweler pointed out that common topaz can easily be mistaken for true topaz.
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Many collectors enjoy displaying pieces made from common topaz because of its bright yellow color.
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During the rock shop tour, I learned that common topaz is often polished into jewelry.
Synonyms
A hard clear or yellow brown gemstone often worn in jewelry
A yellow stone that looks like topaz but is not true topaz
Surface Forms
Morphology
The noun phrase is directly compositional: 'common' (ordinary/frequent) + 'topaz' (the gemstone) yields an ordinary or typical variety of topaz, which a B1 learner who knows both words can infer. Although the precise mineralogical nuance (a yellow quartz often mistaken for true topaz) is specialized, the basic meaning is transparently derived from the constituents.
Etymology
The noun common topaz comes from old names for yellow stones: people used topaz for bright yellow gems, and adding common showed it was a simpler, cheaper stone. So common topaz today means a yellow quartz that looks like real topaz but is 'not the real gem'.