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gemology

or gem·mol·o·gy

[je-mol-uh-jee]
noun
  1. the science dealing with natural and artificial gemstones.

Origin of gemology

First recorded in 1965–70; gem + -o- + -logy
Related formsgem·o·log·i·cal, gem·mo·log·i·cal [jem-uh-loj-i-kuh l] /ˌdʒɛm əˈlɒdʒ ɪ kəl/, adjectivegem·ol·o·gist, gem·mol·o·gist, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for gemology

gemology

gemmology

noun
  1. the branch of mineralogy that is concerned with gems and gemstones
Derived Formsgemological or gemmological (ˌdʒɛməˈlɒdʒɪkəl), adjectivegemologist or gemmologist, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012