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Optical spectrometer
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=== In Gemology === [[Gemology|Gemologists]] frequently use spectroscopes to determine the absorption spectra of gemstones, thereby allowing them to make inferences about what kind of gem they are examining.<ref>{{Cite web|title=Spectroscope - The Gemology Project|url=http://gemologyproject.com/wiki/index.php?title=Spectroscope#Use_of_the_spectroscope|access-date=2022-01-04|website=gemologyproject.com}}</ref> A gemologist may compare the absorption spectrum they observe with a catalogue of spectra for various gems to help narrow down the exact identity of the gem.{{clear}}
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