Antwerpse Gemologische Instelling (A.G.I.)
AGI has been at forefront of diamond grading and certification since its inception almost 50 years ago, helping our customers achieve their goals. AGI offers a range of certification services, including a customised diamond sealing service and valuation reports, all of which are graded according to industry standards.
American Gem Society Laboratories (A.G.S.L.)
Since 1996, the AGS Laboratories has provided modern diamond grading services to members of the industry. Today, we continue with our innovative approaches to diamond grading and consistently adhere to the AGS consumer protection ethics and standards.
American Institute Of Gemological Research (A.I.G.R.)
A.I.G.R. (American Institute Of Gemological Research) was founded in February of 1979 as an Independent Gemological Laboratory, devoted solely to the gemological research and monetary evaluation of gems and fine jewelry. All evaluations are backed by a micro-chemical analysis and state-of-the-art instrumentation.
CGL-GRS Swiss Canadian Gemlab
Canadian Gemological Laboratory is one of Canada’s most technologically advanced gemological laboratories. The Company is headed by Branko Deljanin, known for his extensive experience in research on diamonds and advanced testing of gemstones. Canadian Gemological Laboratory boasts an expert team of gemologists, appraisers and office specialists with more than 50 years of combined work experience in major North American laboratories and the diamond trade. The Company’s services utilize state-of-the-art standard, advanced and specialized equipment to ensure accurate identification and certification of diamonds, gems and jewellery.
Centre For Gem Studies
Centre For Gem Studies is the only Educational and Research Organization in Kerala, that provides regular classes in Gemmology in par with any international standards. The centre has a Diamond & Gemstone Testing laboratory, which conducts Gem Testing for the public and for the Gem and Jewelry sector.
Diamond Certification Laboratory of Australia (DCLA)
The DCLA is an independent grading laboratory, internationally affiliated and recognized. The laboratory does not sell, buy or trade in diamonds and is endorsed by the Jewellers Association of Australia (JAA). The laboratory is constantly updating equipment to keep abreast of the developments in treatments and detection methods.
European Gemological Laboratory (EGL USA)
Established in 1974, EGL USA, as one of the leading gemological institutions in Northern America, offers the most comprehensive array of gem identification and evaluation reports in the industry. We are full service laboratory, providing services for diamond grading, colored diamonds, colored stones and pearls.
Gem Certification and Assurance Lab (GCAL)
GCAL is the only diamond grading company that provides traceable, identification and verification of diamonds to assure auditors, lenders and owners with specific matching of diamonds to accounting records.
Gemological Institute of America (G.I.A.)
Established in 1931, GIA is the world’s largest and most respected nonprofit institute of gemological research and learning. With nearly 900 employees, the Institute’s scientists, diamond graders, and educators are regarded, collectively, as the world`s foremost
authority in gemology.
Gemological Science International (G.S.I.)
Gemological Science International (GSI) is an independent gem laboratory that has re-engineered the processing paths for gem I.D. and grading, resulting in higher productivity and reduced costs for its clients. Other innovations include 24/7 online tracking of diamond grading, access to actual report in real time, and digital plotting.
Developers of the Brilliance Scope. An innovative tool that measures the brilliance of a diamond generating a printed report that assists retailers to close sales faster with higher margins. With the GemEx report the consumer is guaranteed to get the best performing diamond that money can buy.
Gem Scan International Inc. (GS Laboratories)
Established in 1985, Gem Scan is an independent gemological laboratory that provides diamond grading, colored stone grading, jewelry appraisals and laser inscription to manufacturers, wholesalers, retailers and the public. Gem Scan is an ISO 9001 registered company.
GHI Gemological Laboratory
At GHI, we’re focused on the finer things: exceptional diamonds and the details that define them. Our staff is dedicated to discovery — refining scientific techniques, monitoring industry trends, and bringing the best of our collective experience to every analysis and every customer.
H.R.D. – Hoge Raad voor Diamant
The educational department of the Antwerp Diamond High Council is the HRD Institute of Gemmology. It offers a range of highly qualified training programmes in diamond grading and gemmology.
HKD Diamond Laboratories Canada
We are a Canadian firm established in the Canadian marketplace as Gemologist providing various Gemological Services for the Wholesale and Retail Market. As a Wholesaler / Manufacturer / Retailer, certifying your Diamonds at Diamond Laboratories Canada (DLC) allows you to quickly understand evaluate your Diamonds.
I.D.I. – Gemological Laboratory
The Laboratory is a subsidiary of the Israel Diamond Institute, which is a non-profit public company established 20 years ago (formerly G.I.L.I) for the purpose of providing the Israel diamond industry with reliable gemology services.
I.G.C. – International Gemological Center (Israel) Ltd.
With long standing experience and expertise of over 20 years in gemological services we are a name to trust in diamond and gemstone grading. A certificate provided by the International Gemological Center is a stamp of quality.
I.G.I. – International Gemmological Institute
Established in Antwerp, New York, Mumbai, Bangkok, Tokyo, Toronto, Los Angeles, Dubai, Tel Aviv, Cavalese and Seoul, IGI is the world`s largest independent gem certification and appraisal institute and is renowned for its quality services, extensive experience and know-how.
Independent Gemological Laboratories
INDEPENDENT was established in 1999 from a need expressed by industry leaders for a laboratory that addressed the critical issues of servicing and supplying the growing demand for certified products. We now have laboratories in New York and in Mumbai.
National Gemological Laboratory of Canada Inc. (N.G.L.C.)
Consistently delivering excellent service with speed and accuracy. Located in the heart of Toronto’s jewellery district, providing clients with an independent third party opinion when having their diamonds, coloured gemstones and jewellery graded and/or appraised. Fully equipped with the latest technology used to identify any synthetics, treated or imitation diamond and gemstones. Services include diamond grading, laser inscription, appraisals, and online verification.