Diamond shoppers around the world are often faced with the choice of the cut quality. The most common options people consider are Excellent, Very Good and Good diamond cut grades, but what’s the exact difference between those and which one you should buy. Let’s take a closer look.
Diamond Cut Grading
- Excellent or Ideal (AGS)
- Very Good
The cut grading is a complex process which includes evaluation of the diamond’s parts, their symmetry and proportions and the quality of the stone’s polish.
Overall symmetry and proportions of a diamond determine how much of the light entering the stone will remain in it, how much will be reflected to the observer and how much will leak out of the stone.
In other words, diamond cut affects its brilliance (light that is reflected), sparkle or scintillation (light that is visible when the stone is moved) and fire (light that is broken into rainbow flashes).
Excellent Diamond Cut Characteristics
Diamonds with an Excellent cut grade have proportions and symmetry that allow showing maximum brilliance, fire and sparkle.
When viewed from the top, the light passing through such stones creates a beautiful and clear pattern of bright and dark spots.
Very Good Diamond Cut Characteristics
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.
Such diamonds display very good fire, brilliance and scintillation and don’t look dramatically different than Excellent stones.
When viewed from the top, Very Good cut diamonds may look a bit darker and the light passing through may create a slightly uneven pattern.
Good Diamond Cut Characteristics
Diamonds with Good cut grade do not reflect as much light as Excellent and Very Good cut diamonds, which is why their fire, brilliance and sparkle are not as good.
When viewed from the top, such diamonds do not form a symmetrical pattern, or they form a mainly dark pattern.
Choosing Between Excellent, Very Good and Good Cut
As a general rule, the higher the cut grade of a diamond, the more brilliance and sparkle it exhibits, the brighter it looks, and the higher its price. Higher cuts can hide clarity and colour imperfections as well.
In case the diamond of your choice is near colourless and doesn’t have visible inclusions, it is worth to spend money on a higher cut grade since cut will highly affect the appearance. Perfect colour and clarity will look dull and dark if the cut is poor.
Of course, you are the only one who can decide whether it is worth to pay the premium for a diamond with Excellent cut grade, but it always makes sense to examine stones with different cut grades and see which one is more appealing to you.
Cover image credit: Ritani