Prepared by the CIBJO Diamond Commission, the 2025 Diamond Special Report proposes a re-evaluation of how synthetic diamonds are being described in the marketplace, so that they are clearly distinguishable from natural diamonds.

CIBJO’s Laboratory-Grown Diamond Guide is intended to assist all professionals handling laboratory-grown diamonds. It is non-judgmental, and the definitions and clauses are designed to enhance consumer confidence while preventing unfair or deceptive trade practices.

The CIBJO Blue Books are definitive sets of grading standards and nomenclature for diamonds, used worldwide to ensure consistent industry communication.

In 2019, CIBJO established a working group that later became the CIBJO Laboratory-Grown Diamond Committee. Its goal was to prescribe clear rules and standards for differentiating natural diamonds from synthetic stones.

CIBJO Congress 2025: The panel discuss the current challenges facing the diamond industry. From left: Avi Krawitz (moderator) Mahiar Borhanjoo, (De Beers Group); David Kellie (Natural Diamond Council); Brijesh Dholakia (Hari Krishna Exports) Ravi Bhansali (AWDC) Yoram Dvash (WFDB); Wafa Jaffery (Dub