Saturday, 1 November 2014

How Diamond Cut affects Beauty & Price?

Share Forward Twitter Facebook Buzz LinkedIn MySpace Digg

 

Arguably the most complex and contested of the 4Cs, Diamond CUT, is not be mistaken for diamond shapes. We covered Shape in the first of the 4Cs mailer.

Diamond Cut has the greatest influence in the overall beauty of the diamond. It determines what we generally refer as the diamonds sparkle! It determines how well a diamond will reflect and refract light.

When gemologists say "cut," they are talking about a gemstone's proportions, such as its depth and width and the uniformity of its facets--all characteristics that control brilliance, durability and other features we look for in a diamond. The more precisely a diamond is proportioned and polished, the bigger it will look and the more brilliantly it will perform.

Diamond Anatomy :

When talking about the cut of a stone it is important to be familiar with the anatomy of a diamond. The illustration below is for a round brilliant cut diamond. Different diamond shapes have the same components; however special cuts, radiant cut, princess cut, and all custom cuts have additional facets for added brilliance.

Each shape has different ranges of cutting proportions. For purposes of our discussion, we will concentrate on the round brilliant cut diamond. The modern round brilliant cut diamond has 58 facets and accounts for about 75% of all diamonds.

Given below is the range that we need to look for under each of the important determining factor to find a great diamond.

Diamond Specifics

Meaning

Ideal Range

Table Percentage

The width of the table divided by the diameter of the gemstone 7% - 64%
Depth Percentage The ratio of the total depth of the diamond (from table to culet)- 60%-63%
Girdle The narrow band around the outer circumference of a diamond.- Very Thick to Thin
Culet A tiny flat facet at the bottom where all the facets of the pavilion otherwise come to a point Pointed or None 
Polish A grade given to the external finish of a stone Very Good to Fair
Symmetry

Refers to the uniformity if the stones cut-

Very Good to Fair 

As shown in the images below, when a diamond is well-cut, light enters through the table and travels to the pavilion where it reflects from one side to the other before reflecting back out of the diamond through the table and to the observer's eye. This light is the brilliance we mentioned, and it's this flashing, fiery effect that makes diamonds so mesmerizing.

In a poorly cut diamond, the light that enters through the table reaches the facets and then 'leaks' out from the sides or bottom of the diamond rather than reflecting back to the eye. Less light reflected back to the eye means less brilliance.

The result of the complex relationship with light is a magnificent display of three attributes.

Brightness is the combination of all white light reflecting from the surface and interior of a diamond.

Fire describes the "flares" or color emitted from a diamond. Its the prismatic effect.

Scintillation describes the flashes of light you see, when the diamond, the light source or when the observer move.

Common Problems with Diamond Cuts

     • A broken or chipped culet.

     • A culet that's missing or one that's off center.

     • Misaligned or extra facets.

     • A girdle that is too thick, creating poor proportions, or too thin, making it easier to damage.

     • A fringed girdle, with tiny cracks going into the diamond.

     • A table that slopes to one side.

Always buy diamonds from a reputable jeweler and ask questions about diamond characteristics. Inspect as many diamonds as possible so that you can make good comparisons.



Surat Diamond, Vasant Vilas 31 Dr. D.D Sathye Marg, Mumbai, Maharashtra 400004, India

You may unsubscribe or change your contact details at any time.

Powered by:
GetResponse
open

No comments:

Post a Comment