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Established in 1931, the Gemological Institute of America (GIA) is the world’s foremost authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading source of knowledge, standards, and education in gems and jewelry.

Serving the industry with diamond, gem and jewelry grading, education and appraisals since 1975, IGI operates 31 laboratories around the world grading finished jewelry, natural diamonds, lab-grown diamonds and gemstones, along with 18 schools of gemology graduating thousands of students annually.

Founded in Switzerland, SSEF upholds the country’s renowned standards of precision, methodological rigour, attention to detail, and reliability. This ensures consistency across all research, testing, and education activities. Since 1972, SSEF has led the field in gemmological research, setting industry standards through cutting-edge science. Innovation is driven by a commitment to sharing knowledge through publications and education.

The Gübelin Gem Lab was founded in 1923 as a gemmological laboratory to examine and determine the authenticity of the stones used in Gübelin’s jewellery. This was a way to maintain the trust of its clients and stay true to its ideals. Since then the Gübelin Gem Lab has grown to become one of the most respected institutions of its kind in the world.