What is diamond grading?

Diamond grading is a complex process by which a trained professional evaluates a gem in detail based on the 4 Cs system of the Gemological Institute of America or the AGS 0–10 grading scale of the American Gem Society. The traits you consider to determine the quality of a piece include carat weight, cut, color, and clarity. The process involves the use of a variety of tools from a loupe to a gemological microscope to an ultraviolet lamp. Your duties involve the examination of the jewelry in a laboratory and preparation of a report that includes the results and a comprehensive diagram.