GIA is the founder of promoting the internationalization of diamond certification. GIA is a non-profit organization, and its funds are donated by people in the jewelry industry. Its main service scope is jewelry appraisal and professional knowledge education and research, which is deeply recognized by the global jewelry industry. Up to now, GIA has 14 teaching institutions around the world, providing professional courses such as research, sales and appraisal, cultivating high-quality jewelry practitioners, and also contributing to GIA's high reputation in the industry, so that the public's trust and professionalism have always maintained a leading position in the world. Nowadays, the 4C standard proposed by GIA is also a common standard in the international jewelry industry.

Bulk cargo is an industry saying, which generally refers to diamonds that are not certified in the market. In fact, these diamonds can also be sent with inspection certificates.