Cut Grading Diamond

American gem society taking cut grading to a higher level.

Cut grading diamond.

Excellent very good and good gia cut grades evaluating the combined effects of facet shapes and angles girdle width culet size polish and symmetry on the overall appearance of a diamond is a daunting task even for professional gemologists. In fact the radiant cut diamond is one of the most affordable diamond shapes. Ags diamond quality document ags was the first independent grading organization to utilize a numerical system in their reports with 0 being the highest grade. Put simply cut is responsible for the quality and degree of a diamond s sparkle.

Two diamonds may have the same clarity color and carat weight but cut is what determines whether or not one is superior to the other. This rare cut represents roughly the top 3 of diamond cut quality it reflects most of the light that enters the diamond. There are three factors that determine a diamond s cut. Blue nile offers four different cut grades ideal.

Meanwhile this round brilliant cut diamond of the same clarity color and carat weight costs 5 240 almost 40 more. For example this 1 01 carat vs1 clarity h color radiant cut diamond from james allen costs 3 300. And a simplified proportion. Non standard round brilliant cut diamonds.

Every diamond certified by the gia undergoes a thorough independent evaluation. Cut estimator enter a round diamond s table crown angle and pavilion angle to see how it would be scored based on the gia and ags proportion based cut grading systems. Here you will learn how gia diamond grades are established and how those grades affect the diamond s price. This cut represents roughly the top 15 of diamond cut quality it reflects nearly as much light as the ideal cut but for a lower price.

And of all the diamond 4cs it is the most complex and technically difficult to analyze. To determine the cut grade of the standard round brilliant diamond the shape that dominates the majority of diamond jewelry gia calculates the proportions of those facets that influence the diamond s face up appearance. A description of its shape and cutting style. Each of the four c s carat weight cut color clarity is accompanied by a diamond chart illustrating the differences between grades.

Cut is the only one of the 4cs that is affected by human hands. The best cut diamonds will sit in the intersection between gia excellent and ags ideal. But reports do contain an assessment of the diamond s polish and symmetry. By choosing a radiant cut over a round.

Fortunately all of these factors have already been taken into consideration.