Diamonds from Christie's auction house will now carry an authentication by Collector's Universe's Gem Certification and Assurance Lab (GCAL). Details of the GCAL certificates will be mentioned alongside the products in catalogue.

Christie's Europe International Director and Chairman Francois Curiel mentioned that: "The GCAL certificate is highly informative about the Four C's of diamonds, but GCAL also grades the optical symmetry plus brilliance of a stone and illustrates the diamond Gemprint with its reflective pattern. As the market leader, we believe it is important for Christie's to introduce these reports to the auction world."

Collector's Universe CEO Michael R. Haynes said. " This is an important step in building our brand through world class channels, and it's a strategy that we will continue to execute as we expand our presence in this marketplace."