It also discusses how to use facetware online to obtain a more accurate estimate of a cut grade.
Excellent cut diamond proportions gia.
At this time an overall cut grade for non standard round brilliant diamonds or fancy shaped diamonds such as rectangular oval or square is not available on gia grading reports.
Gia diamond cutting grades for round diamonds range from excellent to poor.
If you have a stone with perfect diamond proportions the diamond will refract the light in an excellent way.
This is exactly what you are looking for in a beautiful diamond.
You might have heard about the fact that the exact diamond proportions determine the cut of a diamond.
But reports do contain an assessment of the diamond s polish and symmetry.
Gia uses a 5 grade hierarchy for cut.
A description of its shape and cutting style.
Non standard round brilliant cut diamonds.
Gia s approach to diamond cut grade is a proportion based quality system and relies upon a 2 dimensional system to determine a diamond s cut grade.
And a simplified proportion.
Full color 8 page booklet.
Ensure the symmetry and polish of the diamond are either excellent or.
Gia cut grade estimation tables for standard round brilliant cut diamond explains how to locate a particular proportion combination and determine whether it is close to a boundary in the cut grading system.
For the most brilliance and beauty only consider round brilliant diamonds with an excellent cut.
This short video explains the gia cut scale and how gia classifies round brilliant cut diamonds with a cut grade ranging from excellent to poor by factoring in a range of parameters including the diamond s proportions culet size girdle thickness polish and symmetry descriptions.
Diamond cut grade is based on a number of factors including symmetry polish brilliance and fire.
Most people are satisfied and feel safe in purchasing a diamond w gia excellent cut grade.
