Wiktionary
gemological
a. Of or pertaining to gemology.
Usage examples of "gemological".
Such a report was issued by the Gemological Institute of America, and accompanied all stones.
I read all the material from the Gemological InsUtute of America on carating, gram weights, gems and stones, and diamond quality, and I asked a lot of questions of people in the profession.
But look, right now here's the gemological analysis unit from the assay office.