Jewelry 3 15 was released two months ago, and now it has included more than 50 domestic formal institutions and more than 0 counterfeiting institutions, and many international appraisal institutions have also included it.
GIA American Gemological Institute
193 1 was founded by Mr. Robert shipley and has a history of more than 90 years. GIA is not only the first gemological institute in the United States, but also the largest non-profit organization of gemological research and education in the world, including research, education, laboratory and equipment manufacturing companies. GIA ensures the public's trust in gems and jewels by discovering, imparting and applying gemological knowledge. Its own education, research, experiment and equipment development process is almost a growth history of jewelry industry. The main service scope is jewelry appraisal and professional knowledge education research, which has been recognized by the global jewelry industry.