Established in 1931, 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.
GIA is a charitable, nonprofit 501(c)(3) organization with a mission to ensure the public trust in gems and jewelry by upholding the highest standards of integrity, academics, science, and professionalism. Your tax-deductible donation supports GIA’s education, research, laboratory services, and instrument development.
For more visit https://www.gia.edu/
The American Gem Society (AGS) is a nonprofit trade association of fine jewelry professionals dedicated to setting, 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 Society 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.
AGS Laboratories, founded to support the AGS mission, is a nonprofit diamond grading laboratory with a mission of consumer protection. Adhering to the AGS Diamond Grading Standards, AGS Laboratories is dedicated to offering diamond grading reports that provide consistency and accuracy based on science.
For more visit https://www.americangemsociety.org
IGI's supreme position in the gemological world is no coincidence. It is the result of continuous research, support and synergy with professionals and consumers alike.
Around the world, IGI certificates bring confidence when buying or selling diamonds, gemstones and jewelry. Total commitment to understanding consumer concerns has motivated IGI to develop comprehensive analysis and clear documentation for consumers. This empowers jewelry buyers to focus on finding precisely what they want, with full assurance in the integrity and quality of the IGI certification.
For more visit http://www.igiworldwide.com
For over three decades, EGL USA has provided cutting-edge gemological research, testing, and laboratory analysis. This ongoing scientific work reflects the lab’s core commitment to protecting both the industry and its consumers. To that end, EGL USA delivers exemplary evaluations with clear disclosure of diamond, gemstone, and jewelry features, including known treatments.
But, science is only part of the EGL USA story. EGL USA also provides exceptional service:
an extensive variety of reports, a wide array of supporting services, and an open dialogue with customers and industry experts, that inspires the creation of exciting, new resources.
EGL USA’s main office is located in the heart of New York’s diamond district, where it has provided this unique balance — of science and service — since 1977. The lab became independently owned and operated in 1986, and grew to include a west coast office in Los Angeles. Together, the labs evaluate diamonds and gemstones exclusively in North America, and continually set the standard as industry leaders.
For more visit https://www.eglusa.com
HRD Antwerp's primary shareholder is the Antwerp World Diamond Centre (AWDC). The AWDC is a private foundation established in 1973 as the Hoge Raad voor Diamant (HRD) or Diamond High Council and represents the Belgian diamond industry.
HRD Antwerp is Europe’s leading authority when it comes to diamond grading, and draws on 570 years of experience passed down through Antwerp’s diamond trade. An HRD Antwerp grading allows any consumer to purchase diamonds or jewellery in full confidence.
The integrity of the HRD Antwerp grading process is absolute. Our diamond lab applies an uncompromising operating code which it supports by using some of the most sophisticated technology and qualified graders available. HRD Antwerp's extensive in-house research department makes sure all processes are updated according to the latest industry developments.
The absolute objectivity of the grading results is guaranteed by means of a double coding system: one set of codes is given to the owner, while the other follows the diamond in the lab. Strict anonymity guarantees strict objectivity.
For more visit http://www.hrdantwerp.com