The American Gem Grading Laboratory (AGG) maintaining and promoting the highest standards of ethical conduct and professional behavior through education, accreditation, recertification of its membership, gemological standards, and gemological research.
The Laboratory is committed to providing educational products to inform and protect the consumer and to contributing to the betterment of the trade by creating industry standards to protect the jewelry-buying public and the fine jewelry industry as a whole.
AGG Laboratory, is a gemstone and diamond grading laboratory with a mission of consumer protection. Adhering to the 4C Diamond Grading Standards, AGG Laboratory is dedicated to offering gemstone and diamond grading reports that provide consistency and accuracy based on science.
American Gem Grading Laboratory
room 4038,floor 4,No.59 XINJIEKO xicheng district beijing.