The science and procedures involved in mining, faceting, and marketing of gemstones. A person studying in this discipline is a gemologist.
The study of gemstones. It includes the study of their identification, grading and appraisal as well as the examination of their symbols, fashioning, history and marketing.
Gemology (gemmology outside the United States) is the science, art and profession of identifying and evaluating gemstones. It may be considered a branch of mineralogy. Some jewelers are gemologists and are qualified to identify gems.