Saturday, October 19, 2013

The 4 C's of Bling: Cut

The Cut is the most fundamental attribute to consider when it comes to judging a diamond. However, it is also often on of the most complex and confusing terms. The diamonds cut grade is and objective measure of a diamonds light performance or its brilliance and overall sparkle. For this very reason, cut also plays and important part in determining the price of the stone.


In order to undersatnd diamond cut it is necessary to know the anatomy of a diamond as well as how different proportions affect the movement of light through a stone. Based on these considerations, diamond cut is graded by a certification body. Certification bodies like GIA employ a five point scale ranging from excellent and very good to good, fair and poor.

The science behind a diamond's brilliance depends on its great ability to bend, slow and direct light as it passes through. The cut of the diamond is what determines how well the diamond is able to re-direct the light back through the surface of the diamond.

What Cut Grade is Right For Me?

1) Excellent:  Diamonds Classified as Excellent or Ideal offer the most sparkle, disperson and fire and are considered to be of the highest quality. Light movement through an ideal cut diamond bounces almost fully back out the top of the stone and brings its brilliance into view.







2) Very Good:  Diamonds classified as Very Good or Fine offer slightly less brilliance and scintillation than the excellent cut. However, as the difference between the two is almost negligible in some cases, very good cuts offer better value for money than excellent cut diamonds.





3) Good Cut:  Diamonds classified as Good usually allow some light to escape during the reflective process, although once again, the difference between this and very good cut diamonds is small. Therefore, these make an affordable option.







4) Fair Cut or Shallow Cut: Light moving through a shallow cut diamond is lost out of the bottom of the stone and the lack of light play makes shallow cut diamonds appear lifeless.

5) Poor Cut or Deep Cut: Light moving through a Deep cut diamond escapes out from the side, darkening all or most portions of the stone.

The poor sparkle performance of Diamonds classified as Fair or Poor cut may be noticeable to the untrained eye and are less costly for this reason. It is also advisable to not consider Fair and Poor cut while buying since they do not make a great investment.

Other Factors affecting Cut:

Symmetry: When the facets of a diamond are well balanced and aligned, the stone has symmetry, which is critical to creating optimal brilliance and scintillation. Errors in symmetry include facets that are not properly aligned, improperly shaped facets or an off-centre table.



Polish: After a Diamond is cut, each facet must be polised. The process can leave surface scratches or marks, which are like streaks left behind. If a diamond has no scratches or very minor ones, the polish is of a high degree. Scratches, lines , burn marks created by excessive heat or rough girdles could downgrade the polish rating of a diamond and if significant, could affect the overall cut grading.


To learn more, visit the column regularly. The next part would have necessary information about several fancy diamond shapes.

                 At J D Diamond Jewellery, we apply the same high quality standards to all of our diamonds. We have an exceptional collection of traditional round diamonds and we also offer the finest non-round or fancy-shaped diamonds. All of our certified diamonds are graded by the GIA or IGI to have FL to SI-2 clarity, D to H color and Ideal, Very Good or Good cut.


1 comment:

  1. Thanks for sharing educationally information about diamonds, Such its useful for lab created diamonds, loos diamonds etc. Keep sharing.

    ReplyDelete