New GIA Cut Grade

GIA recently announced the introduction of its Diamond Cut Grading System for round brilliant diamonds. Over the course of a fifteen-year research project, GIA researchers performed extensive computer modeling of round brilliant diamonds and conducted more than 70,000 observations on actual stones to validate the science. This system can now predict the cut grade for more than 38.5 million proportion sets. The result is a comprehensive Cut Grading System that accurately reflects all the critical cut factors of a round brilliant diamond.

GIA’s Diamond Cut Grading System assesses a diamond’s overall face-up appearance by using computer modeling along with other algorithms to predict levels of brightness, fire, and scintillation (sparkle and pattern) -- which indicate how well a diamond’s proportions work together to return white and colored light to an observer -- taking into account other important factors such as design (durability and over-weight) and craftsmanship (polish and symmetry).

For more information on GIA’s Diamond Cut Grading System, click here.