Since inception, the International Gemological Institute (IGI) has remained steadfast in its mission as an independent, third-party authentication body – unbiased, and free from external influence. Our commitment to transparency, integrity, and scientific accuracy has earned us the trust of consumers, manufacturers, and retailers around the world.
Every diamond we certify undergoes a rigorous 14-step grading process, carried out by expert gemologists using state-of-the-art equipment – upholding accuracy, impartiality, and trust at every step.With 31 laboratories across 10 countries, IGI operates the world’s largest gem lab network.
A Global Leader with Recognized Credentials
Our leadership in diamond and gemstone certification is built on:
- ISO 17025 accreditation, validating our technical precision and adherence to international standards.
- Big Four as our internal auditors, reinforcing robust internal governance.
- Membership with the Responsible Jewellery Council (RJC), reflecting our ethical responsibility and sustainability commitment.
- Uniquely, IGI is the only gemological laboratory in the world listed on the stock exchange, underscoring our financial transparency and global accountability.
IGI Reaffirms Its Commitment to Full 4Cs Grading Standards for Natural and Lab-Grown Diamonds
For close to a century, the 4Cs – Cut, Color, Clarity, and Carat – have served as the universal language for assessing diamond quality. At IGI, we uphold these standards not merely out of tradition, but from a deep-rooted belief in the consumer’s right to transparency, knowledge, and confidence.
At IGI, we’re not just grading diamonds – we’re safeguarding the trust that consumers place in us.
