Like gia the lumera cut grade is based on a variety of factors and is conservatively applied.
Diamond cut grades 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.
For standard round brilliant cut diamonds falling in the d to z color range the report also includes a.
What goes into a gia diamond cut grade.
And a simplified proportion.
But reports do contain an assessment of the diamond s polish and symmetry.
For diamonds without a gia cut grade because the diamond was certified before gia began assigning cut grades in 2005 or is a shape that gia does not currently assign cut grades to lumera will apply its own cut grade according to a proprietary formula.
Cut is the most complex of a diamond s 4cs.
The gia diamond cut scale for standard round brilliant diamonds in the d to z diamond color range contains 5 grades ranging from excellent to poor and is the definitive scale for classifying diamond cuts.
Non standard round brilliant cut diamonds.
Diamond cut quality and why it s important.
In this blog we cover.
A description of its shape and cutting style.
Let s cover some essentials so you can pick the perfect round brilliant diamond engagement ring.