Diamond cut proportions directly affect a diamond s ability to reflect light and provide brilliance.
Excellent cut diamond proportions.
Because almost all of the incoming light is reflected through the table the diamond radiates with magnificent sparkle.
Ideal cut diamond proportions and brilliance.
As you look at diamonds be sure you re getting the best diamond proportions for the shape.
Thus even if you should have a gia triple excellent graded diamond you should still check yourself that it is within the super excellent proportions i personally suggest for round cut diamonds.
Ideal diamond proportions depend on the shape as each one interacts with light differently.
An ideal cut diamond is a round brilliant or princess cut diamond that is cut to ideal proportions and angles and has excellent polish and symmetry ratings.
Compare the results of diamond 1 left with diamond 2 right in figure 1.
Having an excellent symmetry and polish is a very nice thing to have however the cut proportions of the diamond will impact its beauty even more.
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.
This article has two sections.
If you have a stone with perfect diamond proportions the diamond will refract the light in an excellent way.
A change in the star length from 55 to 60 with all other proportions remaining identical changes the estimated cut grade from excellent to very good.
In the world of round diamonds a stone that scores an excellent rating in all three aspects of polish symmetry and cut 3 ex is often considered to be the pinnacle of well cut diamonds in fact consumers with a better awareness of cut tend to buy diamonds specifically within the triple excellent standards.
An ideal cut diamond reflects almost all the light that enters it and is among the rarest cuts.
It will therefore exhibit a lot of sparkle brilliance and scintillation.
This is exactly what you are looking for in a beautiful diamond.
However if the proportions of a diamond are.
Proportions are based on the ratios.
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 diamonds provide the highest level of fire and brilliance.
To find these proportions look at excellent and ideal cut diamonds but remember that not all of them will meet the recommendations.
You might have heard about the fact that the exact diamond proportions determine the cut of a diamond.
Appearance is the key cut grade aspect for this case because longer stars combined with the other.
Cut grade is the most important factor in determining the overall appearance of a diamond because a poorly cut diamond will seem dull even with excellent clarity and color.
