Diamond EducationThe 4 C's
Diamond Anatomy & Cut Quality
Diamonds are renowned for their ability to transmit light and sparkle so intensely
The quality of cut is crucial to the diamonds final beauty and value. Of all the 4C’s it is the most complex and technically difficult to asses.
The GPA Cut Grading System for the standard round brilliant diamond evaluates seven components. The first three, brightness, fire, and scintillation, considered the diamonds over all face up appearance. The remaining four, weight, ratio, durability, polish and symmetry, asses a diamonds design and craftmanship.
Brightness: Internal and external white light reflects from the diamond.
Fire: The scattering of white light into the rainbow.
Scintillation: The sparkle a diamond produces, and the pattern of light and dark caused by reflection within the diamond.
The design and craftmanship of the diamond considers weight ratio.( weight of the diamond relative to the diameter), the diamonds girdle thicnedd ( which affects its duribility), the symmentry of its facet arrangement, and quility of the polish on those facets
Understanding the 4 C’s of Diamond Shopping
No matter where you shop for your diamonds, it’s always best to do your research beforehand. That way, you can confidently choose the best diamond for yourself.
Natural diamonds are the results of carbon being exposed to tremendous heat and pressure deep in the earth. The process can result in a variety of internal characteristics called inclusions and blemishes.
Evaluating the diamond’s clarity involves the number, size, relief, nature, and position of these characteristics, as well as how they affect the overall appearance of the diamond. While no diamond is perfectly pure, the closer it comes the higher the value. Many inclusions and blemishes are too small to be seen by anyone other than a trained diamond grader.
Diamond cut is often confused with the shape of the diamond. The most common diamond shape used in jewelry is the round diamond. All other diamond shapes are known as fancy shapes.
The color evaluation of most gem-quality diamonds is based on the absence of color.
A chemically pure and structurally perfect diamond has no hue, and it demands a higher price. The GIA color grading system measures the degree of colorlessness by comparing a stone, under controlled lighting and precise viewing conditions. Many of these color distinctions are so subtle that they are invisible to the untrained eye. However, these distinctions can have a big impact on the diamond’s quality and price.
The GIA color scale is the industry’s most widely accepted grading system.
Carat Weight (Size)
The measurement of how much a diamond weighs. 100 points equals a carat.
The weight of a diamond below one carat can also be described by it’s “points.” For example, a diamond that weighs 0.50 of a carat can be described as either a half carat or a “50 pointer.”
All things being equal, diamond prices increase with carat weight, because larger diamonds are more rare and more desirable. But two diamonds of equal weight can have very different values (and price) depending on the other factors within the three of the 4C’s : color, clarity and cut.