Excellent/Ideal Cut - Tremendous sparkle, excellent polish and symmetry.

Very Good - Lots of sparkle, great polish and symmetry.

Good - A good amount of sparkle, sufficient polish and symmetry.

Poor - Will not sparkle very much, unsatisfactory polish and symmetry.


Exhibits optimal fire and brilliance as virtually all the light that enters is reflected by the diamond to the viewer's eye.

Very Good

When seen from the top-down view, it can show an asymmetrical pattern of light and dark spots. It can also show dullness.


Good Cuts don't reflect light as much as the higher grades because their fire, brilliance, and scintillation are not up to par.


This cut grade doesn't retain the light entering the diamond, so the perceived fire and brilliance is greatly reduced.


Poor Cuts are dull even when seen without magnification tools. It's completely worthless and is a bad value for money.


  • D, E and F color diamonds are considered colorless. Meaning that they have no yellow tint. They are the rarest and as such most valuable. 
  • G-J as near colorless diamonds. However, while most people won't notice the difference unless compared one next to the other.
  • K-M diamonds already possess visible yellow tint. 
  • N-R diamonds already have a very notable color. The color may be either a yellow or even brown tint. 
  • S to Z is called Light Color Diamonds. Interestingly, these Light color diamonds (mainly beyond the U color) are in more demand than the Very Light color diamonds mentioned one grade above




  • Internally Flawless (IF) - No inclusions and only blemishes are visible to a skilled grader using 10× magnification
  • Very, Very Slightly Included (VVS1 and VVS2) - Inclusions are difficult for a skilled grader to see under 10× magnification
  • Very Slightly Included (VS1 and VS2) - Inclusions are minor and range from difficult to somewhat easy for a skilled grader to see under 10x magnification
  • Slightly Included (SI1 and SI2) - Inclusions are noticeable to a skilled grader under 10x magnification
  • Included (I1, I2, and I3) - Inclusions are obvious under 10× magnification and may affect transparency and brilliance, See the category listed below.


A diamond's carat weight is the weight of a diamond. Price is also determined based on the size (weight) of the each stone. 




Some diamonds emit a glow under an ultraviolet light which is called the fluorescence. The fluorescence is not visible under normal light only under an ultraviolet light but it is perceived as a defect therefore affecting the price.


The better the polish the more perfectly finished the diamond will be which will affect the general appearance of the diamond.  A poor polish can affect the light patterns which enter and exit the diamond giving it that brilliantly sparkly look.  


The symmetry of a diamond refers to the precision of the facets in the cut of the diamond.  If  a diamond is perfectly symmetrical then the light will be able to travel in and out of the diamond giving the diamond the brilliance that creates the sparkle.