In general the better the cut grade of a diamond the more brilliance and sparkle it will have and the stone will look brighter.
Diamond cut grade very good vs excellent.
A diamond s cut is evaluated by trained graders who assess a stone s symmetry and proportions and assign a cut grade based on how closely the diamond matches the particular ideal cut used as a benchmark.
Diamonds with very good cut grade are quite similar to the diamonds with excellent cut grade.
The only difference is that one or two dimensions are a bit outside the top standard.
Gia very good cut vs excellent.
The reality is that 55 of all round diamonds receive an excellent cut grade from the gia.
About 25 30 of these excellent diamonds are not recommended.
How diamond cut grades are assigned.
And a diamond with an excellent cut has to have excellent or at least very good symmetry as well.
The gia defines a very good cut as follows.
In this category of diamonds you can expect to see poor performance and increased darkness in the diamonds.
These diamonds include symmetry flaws that can only be seen face up at 10x magnification.
Deciding between excellent very good and good cut.
The closer the diamond matches to the ideal benchmark the higher the cut grade.
Very good cut grade diamonds.
To the naked eye very good diamonds provide similar sparkle to those of excellent grade.
That said i would advise you to go for a very good symmetry grade.
Such diamonds display very good fire brilliance and scintillation and don t look dramatically different than excellent stones.
Conversely a well cut diamond can have a slightly lower color g h or clarity si1 si2 and still look quite beautiful due to its superior ability to create sparkle and brilliance.
Ensure the symmetry and polish of the diamond are either excellent or very good.
For the record i will not recommend buying any diamonds in this cut grade.
For superior brilliance choose a diamond with a cut grade of very good or excellent for round diamonds and good or better in fancy shape diamonds.
The gia very good cut grade consists of diamonds that have issues with brightness scintillation and finish.
However keep in mind that only you can decide whether it is worth it to pay a premium for an excellent diamond over a very good one for example.
For example a diamond with very good symmetry could still receive an overall cut grade of excellent cut if its other parameters are within the limits of the excellent grade.
As a diamond buyer with 30 years experience i don t waste much time thinking about the difference between gia excellent and very good cut diamonds.
Our consultants review thousands of excellent cut diamonds and find bad specs depth table and angles.
However another diamond with good symmetry would only receive a very good cut grade at best even if all the parameters meet excellent standards.