Most people are satisfied and feel safe in purchasing a diamond w gia excellent cut grade.
Excellent cut diamond proportions gia.
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.
Diamond cut grade is based on a number of factors including symmetry polish brilliance and fire.
Excellent very good good fair and poor.
And a simplified proportion.
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.
It will therefore exhibit a lot of sparkle brilliance and scintillation.
For the most brilliance and beauty only consider round brilliant diamonds with an excellent cut.
A description of its shape and cutting style.
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.
However if the proportions of a diamond are.
You might have heard about the fact that the exact diamond proportions determine the cut of a diamond.
Non standard round brilliant cut diamonds.
Full color 8 page booklet.
If you have a stone with perfect diamond proportions the diamond will refract the light in an excellent way.
But reports do contain an assessment of the diamond s polish and symmetry.
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 uses a 5 grade hierarchy for cut.
