Learn about our trusted certification labs and their processes.
FAQs About Diamond Certification:
What certifications does Great Heights use?
International Gemological Institute
The International Gemological Institute (IGI) was first established in 1975 in Antwerp, Belgium. In a city known for its diamond trading and craftsmanship, IGI is the oldest operating laboratory. Over time, IGI has developed and been the first to introduce several innovative techniques and processes in diamond evaluation. To learn more about IGI’s impressive history and their significant contributions to the diamond industry, visit their site.
Other Labs We Use
Gem Certification and Assurance Lab
The Gem Certification and Assurance Lab (GCAL) was founded in New York City back in 2001. They’re known for their Guaranteed Diamond Certifications, which means they ensure their assigned cut, color and clarity grades—as well as carat weights of the diamonds—with a cash back policy. For more on GCAL and their exclusive certification guarantee, visit their site.
What is the best certification for diamonds?
Every lab uses approximately the same grading process to evaluate diamonds, but everyone has their own opinion which of these labs is the “best.” Great Heights uses IGI and GCAL diamond grading in conjunction with one another because both labs have excellent reputations and are known for their expertise.
What is a IGI diamond certification?
The International Gemological Institute (IGI) refers to another of the most esteemed labs for diamond evaluation. IGI has been a pioneer, contributing many of the most significant innovations in diamond evaluation and remains the largest organization of its kind. Along with GCAL, these two certification processes ensure that every Great Heights diamond is expertly evaluated and graded.
What is a GCAL diamond certification?
A GCAL diamond has been certified by the Gem Certification & Assurance Lab (GCAL). A GCAL certification gives you confidence and a guarantee that your diamond is accurately evaluated and graded in terms of cut, color, clarity, and weight.