A scientist or expert who studies gems, precious stones, and their properties, origins, and characteristics; someone skilled in gemmology.
From gemmology (study of gems) + -ist (one who practices or studies). Gemmology comes from Latin gemma + Greek logia (study), making gemmologist someone who 'studies gems' professionally.
Modern gemmologists use spectroscopy, X-rays, and thermal imaging to determine whether a diamond is natural or lab-created—a far cry from ancient gem traders who relied on experience and intuition, yet the romance of gems remains unchanged.
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