A scientist or expert who studies gems, identifying their properties, origins, authenticity, and value.
From gemology + -ist suffix (one who practices or specializes in). Gemology itself combines Latin gemma 'gem' with Greek -logia 'study.' The -ist suffix comes from Greek, indicating an expert practitioner.
A gemologist can tell you not just if a ruby is real, but where it came from—Burmese rubies have different fluorescent signatures than Thai ones, allowing experts to trace gems back to specific mines and geological events millions of years old.
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