Definition of gemology in US English:


(also gemmology)


  • The study of precious stones.

    • ‘He feels that graduates from any discipline can do a course in gemology as long as they are truly interested.’
    • ‘She has specialised in gemmology, diamond grading, jewellery designing, and computer-aided design and manufacturing.’
    • ‘It could take up to three years if she also goes for the diploma of gemology award.’
    • ‘Although I'm not a student of gemology, this appears to be nothing more than a symbolic move to satisfy the politically correct advocacy.’
    • ‘The book reflects the author's many years of work in microscopy and photomicrography in the field of gemology.’
    • ‘The extensive exhibition incorporates biology, gemology, anthropology, mineralogy, and ecology.’
    • ‘The following is a collection of relatively modest observations on some aberrations relating to mineral collecting and the professional literature of gemology that all too often crop up in the popular literature.’
    • ‘The science of gemmology teaches how to pick the best and how to spot even the smallest flaw in diamonds, emeralds, rubies, and others.’
    • ‘As enhancements become more difficult to detect, even gemology experts are increasingly dependent on analytical chemistry to defend the integrity of their trade against aggressive tampering.’
    • ‘The focus of the biennial event was the history of natural history museums, mineralogy, gemology, crystal chemistry, and crystallogenesis.’
    • ‘The sciences of gemology and paleontology meet in a fascinating new exhibit.’
    • ‘Diffusing anything new into a stone during heating is almost always controversial in gemology.’
    • ‘Anyway you aren't trying to get a qualification in gemology, so it won't take you years or months to learn something about diamonds.’
    • ‘The death of such a multifaceted man is a blow to all aspects of gemology and mineralogy.’
    • ‘She comes from a family of jewellers and she has herself done a course in gemology.’
    • ‘Among his many achievements, none was more outstanding than his authorship of nineteen books, several of which have become standard texts in the field of mineralogy and gemology.’


Early 19th century: from Latin gemma ‘bud, jewel’ + -logy.