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.
Excellent cut diamond proportions gia.
This is exactly what you are looking for in a beautiful diamond.
For the most brilliance and beauty only consider round brilliant diamonds with an excellent cut.
Gia uses a 5 grade hierarchy for cut.
Diamond cut grade is based on a number of factors including symmetry polish brilliance and fire.
Gia diamond cutting grades for round diamonds range from excellent to poor.
A description of its shape and cutting style.
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.
If you have a stone with perfect diamond proportions the diamond will refract the light in an excellent way.
Excellent very good good fair and poor.
Most people are satisfied and feel safe in purchasing a diamond w gia excellent cut grade.
And a simplified proportion.
Non standard round brilliant cut diamonds.
It will therefore exhibit a lot of sparkle brilliance and scintillation.
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.
It also discusses how to use facetware online to obtain a more accurate estimate of a cut grade.
Full color 8 page booklet.
However if the proportions of a diamond are.
Ensure the symmetry and polish of the diamond are either excellent or.