Every diamond IGI certifies undergoes a rigorous 14-step grading process, carried out by gemologists using state-of-the-art equipment
The International Gemological Institute (IGI), the grader of lab-grown diamonds globally, has confirmed it will continue applying the universal 4Cs grading to all diamonds, whether natural or lab-grown. This affirmation comes as many in the industry grapple with the shift by others to a different, diluted scale for lab-grown diamonds sent to their locations.
Recognising their identical properties to natural diamonds, IGI applied the existing 4Cs to prevent industry and consumer confusion, mirroring the approach taken in the cultured pearl market.
The institute stated, “Since inception, 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 IGI certifies 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.
IGI has reaffirmed its commitment to full 4Cs grading standards for natural and lab-grown diamonds. For nearly a century, the 4Cs – cut, colour, clarity, and carat – have served as the universal language for assessing diamond quality.
