International Gemological Institute (IGI) is one of the world's largest independent grading and accreditation services providers. With over five decades of experience, the Belgium-based organization operates globally, with key laboratories in Germany and across Asia and the Americas. IGI is recognized for its grading of both natural and lab grown diamonds and holds the prestigious ISO 17025 accreditation - one of the most respected international standards for calibration and testing laboratories.

This accreditation, combined with IGI's rigorous grading protocols, ensures transparency, consistency, and precision in every report issued.

Each diamond submitted to IGI undergoes a meticulous grading process performed by trained professionals using advanced instrumentation and internationally accepted standards.

The comprehensive evaluation begins with Identification & Registration, followed by precise Weight & Measurements. Experts then conduct Photography & Plotting to document the diamond's unique characteristics.

Professional graders assess Color Grading and Clarity Grading in specialized viewing environments. Cut Analysis determines how the diamond interacts with light, while Finish Grading evaluates the quality of polish and facet junctions.

The result is a reliable, comprehensive grading report that gives customers full confidence in their diamond's quality and authenticity.

facetsN stands by every stone it sells. All diamonds above 0.50 carats are accompanied by an official IGI grading report. Each report includes a unique IGI report number that can be verified online at igi.org, ensuring every facetsN diamond is not only beautiful, but also certified for quality and integrity.