A well-cut diamond will appear very brilliant and fiery, while a poorly cut diamond can appear dark and lifeless, regardless of its color or clarity.
The diamond industry uses the word "cut" in two different ways. First, it's used to describe the shape of a diamond for example, an " emerald cut " diamond.
The second way "diamond cut" is used is to describe the reflective qualities of a diamond. The reflective quality of the diamond is determined by how well the diamond was cut. This second usage the reflective qualities is the one that is graded and gets a score on diamond certificates.
The quality of the "cut" does make a difference in how a diamond looks. Diamond cut is perhaps the most important of the four Cs, so it is important to understand how this quality affects the properties and values of a diamond.
A good cut gives a diamond its brilliance, which is that brightness that seems to come from the very heart of a diamond. The angles and finish of any diamond are what determine its ability to handle light, which leads to brilliance.
See Diamond Anatomy for an explanation of the terms used in the next paragraphs. 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. Good Proportions are Key Most gemologists agree that the best cut diamonds are those that follow a set of formulae calculated to maximize brilliance.
These formulae can be seen in a diamond's proportions, most importantly how the depth compares to the diameter, and how the diameter of the table compares to the diameter of the diamond.
Many diamond stores have a special collection that they consider to be "ideal cut. A good example of these diamonds are those found in BlueNile. Cut does make a difference to the appearance of a diamond.
However, the variance in the proportions between an Ideal Cut and a Poor Cut can be difficult to discern by the casual observer. Because cut is so important, several grading methods have been developed to help consumers determine the cut of a particular diamond.
In general, these grades are:When you're tasked with a heavy duty concrete cutting job, Diamond Products Service All Major Brands · In Business Since · Heavy Duty Tools · Professional Grade Tools3,+ followers on Twitter. Diamonds are renowned for their ability to transmit light and sparkle so intensely.
We often think of a diamond’s cut as shape (round, heart, oval, marquise, pear), but a diamond’s cut grade is really about how well a diamond’s facets interact with light. The cut of a diamond greatly affects a diamond's brilliance; this means if it is cut poorly, it will be less luminous.
In order to best use a diamond gemstone 's material properties, a number of different diamond cuts have been developed.
A diamond cut constitutes a more or less symmetrical arrangement of facets, which together modify the shape and appearance of a diamond crystal. Diamond cutters must consider several factors, such as the shape and size of the crystal, when choosing a cut.
Diamond Cut affects appearance and value more than any other single factor. Find out how to evaluate diamond cuts, and why so many poorly cut diamonds are sold.
Learn why diamond cut is the most important of the 4C’s. Understand how cut impacts a diamond’s brilliance, sparkle and overall quality. To further understand the factors impacting Diamond Cut quality, we'll examine a diamond’s proportions, primarily its table, width and depth.