Wiktionary
alt. The art and science of gems n. The art and science of gems
Wikipedia
Gemology or gemmology is the science dealing with natural and artificial gemstone materials. It is considered a geoscience and a branch of mineralogy. Some jewelers are academically trained gemologists and are qualified to identify and evaluate gems.
Usage examples of "gemology".
Steve Reamer, whose daughter Turi had once babysat Khorii, taught gemology and metal-smithing as well as drawing and, oddly enough, symbology.
There were bills, requests from charities, a bank statement for his private account, a gemology magazine and two invitations.
I put the letters into the gemology magazine’s large envelope and added to them some similar unfinished business that I’d found in the drawer under the telephone, and reflected ruefully, putting it all ready to take to Hungerford, that I loathed paperwork at the best of times.