Founded in 1931, Gemological Institute of America - GIA is the world's leading prestigious training and assessment institute for diamond quality grading, gem and pearl assessment.
A non-profit, community-driven institute, GIA is the leading repository of knowledge, standards, and training in gems and jewelry.
The American Gemological Institute GIA is the most famous and is the place to issue the first standards for diamonds with the 4Cs standards: Carat - Weight, Color - Color, Clarity - Clarity and Cut - Cut.
GIA's mission is to connect people to gem knowledge. A long-standing scientific authority, GIA is more than just a source of diamond knowledge, its grading reports inspire and inspire confidence in diamond buyers anywhere in the world.
GIA's commitment to protecting diamond buyers inspired the Institute to create the “4Cs” and International Diamond Grading System™ in the 1940s. To this day it has become the standard. The most popular, prestigious and worldwide standard for evaluating diamond quality.
As the birthplace of these standards and with continued investment in scientific research, GIA's reputation is second to none.
The world's most respected jewelry retailers, museums, auction houses and private collectors rely on GIA-trained experts to evaluate, grade, and inspect their gemstones. . They recognize the importance and absolute confidence in the complete, unbiased, scientific information in gem evaluation provided by GIA.
Since 1930, GIA researchers have made many innovative contributions to gemological research and knowledge. Robert M. Shipley founded GIA and opened the first gemology course in September 1930 in Los Angeles, USA. His goal is to create public confidence in the jewelry business by training “Certified” Jewelers and Certified Gemologists. The first gemology and gemological testing certificates were issued by Robert M. Shipley in 1934. His idea was to grow the "seed" for GIA and transform the gem industry. and jewelry in the United States and around the world.
Like the physician, the engineer and the engineer, the gemologist must complete prescribed studies and examinations in order [to be] of exceptional service to the public [in] the new profession of Gemology”
Robert M. Shipley