Diamond Grading Certifications
Diamond Reports

Diamond Grading Certifications

GIA Gem Trade Laboratory The Gemological Institute of America are the creators of the International Diamond Grading System. The definition of the 4 C's as the world knows it today was set by GIA...
The Rapaport Diamond List
Diamond Reports

The Rapaport Diamond List

Introduction to the Rapaport List What is the Rapaport list? In the early 1980s, speculation in the market caused the creation of dubious certification offices and unreliable ...